A broad high-elevation valley of steaming thermal ground and lodgepole forest opening toward distant snow-streaked ranges under warm early light, Yellowstone plateau Wyoming, ultrarealistic photograph representative of the region
Trekkr Trail Journal · No. 032 · Yellowstone

YellowstoneWyoming, Montana & Idaho — The Complete Field Guide

Most people plan Yellowstone like a theme park and discover, somewhere around day two, that they've planned it like a country. 2.2 million acres, a 45 mph speed limit, a figure-eight road system, and a bison herd that closes the highway whenever it feels like it. Two of its great valleys perform at first light, which means the difference between seeing wolves and seeing a parking lot is entirely a function of where you slept. This issue is about the campgrounds, the road windows, the dawn habit — and the two hazards visitors consistently get backwards.

Wyoming · Montana · Idaho 12 campgrounds · 2 booking systems Geyser basins & the Canyon Lamar & Hayden at dawn
45 mphPark-wide limit — the number that governs your day
6,500–8,000 ftElevation under every developed campground
1 of 12Campgrounds with hookups — Fishing Bridge, $94
Every monthNPS says expect rain or snow, year-round
Conditions verified 20 July 2026 · Bison and thermal ground are the headline hazards · This block goes stale — the links don't

The animal that hurts the most people here looks like a cow, and the ground is a lid

The rest of this journal is evergreen; this box is not. Yellowstone's real dangers are not the ones people arrive braced for. It isn't grizzlies, and it isn't the backcountry — it's a placid-looking bison in a developed area at mid-morning, and a crust of ground beside a boardwalk that looks like dirt. Everything below is dated to the day we checked it. Trust the live sources, not our date stamp — and read the full Safety section (§07) before you go.

  • Bison injure more people in Yellowstone than any other animal — full stopThat is the National Park Service's own language, along with the fact that bison can run three times faster than a human. On June 26, 2026, at roughly 9:15 a.m., a 12-year-old was gored near Mud Volcano just north of Fishing Bridge and transported to hospital. The pattern in the incident record is the lesson: mid-morning, in developed areas — Old Faithful, Lake Village, Fishing Bridge — to people who walked toward an animal a crowd had already gathered around. Legal minimum: 25 yards from bison and elk, 100 yards from bears, wolves and cougars. (§07)
  • Thermal ground is a thin crust over super-heated waterNPS: "More than 20 people have died from burns suffered after they entered or fell into Yellowstone's hot springs," and the ground beside a feature "may look solid, but it can be thin crust with super-heated water below." Stay on boardwalks and designated trails, hold children's hands, don't run or push, and keep dogs off thermal trails entirely. (§07)
  • There is ZERO legal thermal soaking in 2026 — both swim areas are closedBoiling River remains closed to swimming because of impacts to the river from the 2022 floods, with no reopening date. The Firehole Canyon swim area is closed, with an estimated opening no earlier than late summer/early fall. Soaking in hot springs is prohibited park-wide regardless. Every guidebook and blog still describing Boiling River as an activity is out of date. (§07)
  • Pebble Creek Campground is closed for all of 2026Closed for flood recovery following the June 2022 floods, with no reopening date. That leaves Slough Creek's 16 sites as the only in-park camping in the Lamar Valley — the hardest reservation in the park. Northeast-corner campers need a plan. (§08)
  • Fire danger was HIGH at the last official update — check before any campfireAs of the July 13, 2026 NPS update, wildland fire danger in the park was HIGH. We print no restriction status because it changes constantly. Check Current Conditions the day you arrive. [VERIFY AT PUBLISH — changes without notice]
  • Dunraven Pass: open May 22 – October 12, 2026The Canyon–Tower segment has the latest opening and earliest closing of any interior road. Outside that window the upper and lower loops don't connect on the east side and you reroute via Norris and Mammoth — roughly double the distance. This is the closure that breaks the most itineraries. (§02)
  • 2026 construction delays are real and additiveAnticipated: up to 15 minutes at the Gardner River High Bridge through October, 10+ minutes on Canyon–West Thumb on July/August weekdays, and up to 30 minutes park-wide for chip sealing throughout 2026. Road info: (307) 344-2117, or text 82190 to 888-777.
Live sources · NPS — Current Conditions · NPS — Park Roads · NPS — Backcountry Conditions & closures · NPS — Campgrounds · NPS — Swimming
In an emergency, 911. Park switchboard 307-344-7381; road status (307) 344-2117. Campground reservations: recreation.gov (seven NPS sites) or yellowstonenationalparklodges.com (five concessioner sites). This box was true at press and will not stay true — the sources above are the truth on the day you travel.
01 / THE HOOK

You are not planning a park. You are planning a country.

Yellowstone is 2.2 million acres across three states — 97% Wyoming, 3% Montana, 1% Idaho — sitting on a live volcanic plateau between 5,300 and 11,000 feet. Every developed campground on this list sits at roughly 6,500 to 8,000 feet. NPS tells visitors plainly to expect "big temperature swings, rain, or snow during every month of the year." Snow has fallen here on the Fourth of July. The park is not hard because it is remote; it is hard because it is enormous, slow, crowded at the wrong hours, and full of animals that have the right of way.

A vast steaming hot spring ringed with concentric bands of orange, rust and yellow microbial mat fading to deep blue at the centre, seen from an elevated hillside with lodgepole forest beyond, Grand Prismatic Spring Yellowstone, ultrarealistic photograph representative of the region
The picture everyone wants, and almost nobody gets right. Grand Prismatic photographs like this only from the hillside overlook — a 1.2-mile round trip from the Fairy Falls lot with 105 feet of climb. From the Midway boardwalk beside it, you are at ground level in a steam cloud. Both are worth doing. Only one of them looks like the postcard.

The logistics are the trip

Not which trail, not which geyser. Where you slept, and whether you could get there. Lamar and Hayden perform at first light. A 5:40 a.m. coffee at Slough Creek and a 7:30 departure from West Yellowstone are different holidays.

Two booking systems

Five campgrounds are run by the concessioner on a 13-month window; seven are NPS and book on Recreation.gov exactly six months out. They do not talk to each other. This is the single most confusing thing about camping here (§08).

Real teeth, ordinary competence

Thermal basins have killed more than twenty people. Three campgrounds outside Cooke City ban tents outright after a 2010 grizzly attack. The answer isn't fear — it's reading the rules and following them (§07).

The way to think about this park — a figure-eight, not a checklist Yellowstone's road system is the Grand Loop Road, shaped like a figure-eight, with five entrance roads feeding into it. The upper loop runs Mammoth–Tower–Canyon–Norris; the lower loop runs Norris–Madison–Old Faithful–West Thumb–Lake–Canyon. They meet at Norris Junction and Canyon Junction — the waist of the eight. Everything in this guide sorts into an upper-loop day or a lower-loop day, with Canyon straddling both. Plan by loop, never by checklist, or you will spend your holiday driving past the things you came for. And build slack into every single day: NPS warns drive times run "significantly longer" for wildlife on the roadway, and one bison herd in Hayden routinely costs 45 minutes.
02 / THE SHAPE

Five entrances, one year-round road, and the pass that breaks itineraries

Only one road in Yellowstone stays open to ordinary wheeled vehicles year-round: the North Entrance at Gardiner, Montana, through Mammoth and Tower Junction to the Northeast Entrance at Cooke City. Everything else closes to cars in winter. Inside the summer window, the interior segments open later than the entrances, and two high passes have their own much shorter season. Get these dates wrong and your route simply does not exist.

A high alpine highway switchbacking across a treeless plateau of tundra and lingering snowfields above 10,000 feet with jagged peaks on the horizon, Beartooth Highway Montana Wyoming, ultrarealistic photograph representative of the region
The Beartooth Highway (US-212). Not in the park, but the finest approach to it — a switchbacking climb over the Beartooth Plateau into genuine alpine tundra with snowfields all summer. The 2026 opening was scheduled on or about May 22–23. It closes for the season in mid-October, and it can shut for snow inside that window, including in July.
EntranceGateway town2026 opens to carsCloses
NorthGardiner, MTYear-round—
NortheastCooke City / Silver Gate, MTYear-round (to Cooke City)—
WestWest Yellowstone, MTApril 17October 31
EastCody, WY (~52 mi, Sylvan Pass)May 1October 31
SouthJackson, WY, via Grand Teton NPMay 8October 31
Interior segment2026 opensClosesWhy it matters
West Entrance – Madison – Norris; Madison – Old Faithful; Mammoth – Norris; Norris – CanyonApril 17Oct 31The geyser-country core — the earliest the west side comes alive
East Entrance – Fishing Bridge (Sylvan Pass)May 1Oct 31Historically the most volatile of the five; delayed openings and avalanche-control closures are normal
Canyon Village – Bridge BayMay 1Oct 31Links Canyon to the lake
South Entrance – West Thumb; West Thumb – Old Faithful / Lake Village; Tower-Roosevelt – Tower FallMay 8Oct 31A week later than Sylvan Pass — matters for a Teton-combined trip
Canyon Village – Tower Fall (Dunraven Pass)May 22Oct 12The itinerary-breaker. Latest opening, earliest closing. Also the Mount Washburn trailhead
Beartooth Highway (US-212) & Chief Joseph Scenic Byway (WY-296)~May 22–23Mid-October (2026 closing date not announced)The scenic approach to the Northeast Entrance — and Cooke City's east-side lifeline

Roads typically open at 8:00 a.m. on opening dates, and all dates are weather-dependent — the April 17, 2026 openings were delayed by a winter storm. NPS states plainly that dates are "subject to change without advanced notice." Reconfirm within 72 hours of departure at nps.gov/yell or on (307) 344-2117.

🔴 The two gotchas in those tables One: Dunraven Pass, May 22 – October 12. If you're basecamped at Canyon planning day runs north to Lamar in mid-May or mid-October, that link is closed, and the detour runs via Norris and Mammoth — roughly double the distance. Two: the Northeast Entrance is open year-round, but the Beartooth beyond Cooke City is not. Once the pass closes, Cooke City is a dead-end town reachable by car only by driving through Yellowstone — in at Gardiner, past Mammoth, and fifty-odd miles east through Lamar Valley, then back out the same way. Budget fuel, groceries and medical contingency accordingly. There is a shoulder window after the Beartooth shuts when WY-296 still gets you out east — NPS puts that at roughly early November, weather depending — but it ends, and after it does, the unplowed stretch of US-212 on the Wyoming side (locally "the plug," reported at roughly 8 to 12 miles depending where you measure) is a groomed snowmobile trail, not a road.
An overland rig with a rooftop tent and awning at a quiet lodgepole-pine campsite with a bear box and picnic table, low golden light through the trees, Yellowstone plateau campground, ultrarealistic photograph representative of the region

Distances, and why the park feels enormous

NPS states that "around 50 miles of road separates popular destinations," the speed limit is 45 mph unless posted lower, and maximum RV length on park roads is 75 feet. The NPS-confirmed drive times worth planning against: West Entrance to Madison Junction, 30 minutes; Madison to Old Faithful, 35–45 minutes; Lake Village to Canyon Village, 35 minutes.

We are deliberately not printing a junction-by-junction mileage chart. The widely-reproduced one is internally consistent but we could not confirm it on an nps.gov page, and the same is true of the famous "142-mile Grand Loop" figure. Budget roughly 4–7 hours of pure driving for the full loop and realistically 10–12+ hours with stops — then read the mileage off the official park map.

45 mph governs the dayMax RV 75 ft on park roadsSegment mileages: confirm on the park map
Entrance fees, 2026 — and the one that catches international visitors $35 private vehicle (7 consecutive days) · $30 motorcycle · $20 per person on foot or bicycle (16+) · $70 Yellowstone annual · $80 America the Beautiful interagency annual. Children under 16 enter free on foot or bicycle, and Yellowstone requires no timed-entry reservation — buying a pass in advance is encouraged, not mandatory. There are eight fee-free days in 2026.

The one to flag hard: each non-US resident aged 16 and over must pay an additional $100 per person unless they hold a Yellowstone Annual or America the Beautiful pass. That makes the $80 America the Beautiful pass pay for itself instantly for a single international visitor — buy it before you reach the gate. It's also the better buy for anyone combining Yellowstone with Grand Teton, since the South Entrance road runs through Teton anyway.

03 / GEYSER COUNTRY

The lower loop's west side — where the ground makes noise

This is the half of Yellowstone people picture: the Upper, Midway, Lower and Norris basins strung along the Firehole corridor between Madison and Old Faithful. It is also where the parking problem is worst and where the single most avoidable disappointment lives — standing at ground level beside Grand Prismatic in a steam cloud, wondering where the rainbow went. Distances below are official NPS trail figures. Where NPS contradicts itself, we print both numbers and say so.

A tall white column of geyser steam and water erupting from a pale sinter mound against cold early-morning light with boardwalk and lodgepole forest beyond, Old Faithful Upper Geyser Basin Yellowstone, ultrarealistic photograph representative of the region
The Upper Geyser Basin. Roughly 150 geysers within one square mile — the densest concentration on Earth. Old Faithful is famous not for being the biggest but for being the most predictable, and even that is predicted eruption by eruption, never from a guidebook number.
🔴 The park's own sources disagree on Old Faithful's interval — here is both Two official NPS pages give materially different figures, and we're not going to paper over it. The Geyser Activity page states "94 or 68 minutes (± 10 minutes)" — a bimodal pattern. The Explore Old Faithful page gives an average of ~102 minutes (± 10 minutes) as of January 2025, with an observed range of 54–118 minutes. Both are official; the park does not reconcile them. The practical read: the gap is roughly an hour and a half to two hours, and the park predicts each next eruption individually. Eruption height runs 106–180 feet, duration 1.5–5 minutes. Never plan around a printed number — get the live prediction from the free NPS app, the recorded phone message, or Geyser Times. Note that predictions are unavailable when the Visitor Education Center closes seasonally: early November to mid-December, and mid-March to mid-April.
Ranger-predicted geyserApproximate intervalWhere
Old FaithfulSee the note above — sources disagreeUpper Geyser Basin
Grand~6.5 hoursUpper Geyser Basin
Riverside~6.5 hoursUpper Geyser Basin
Daisy~2 hours 45 minutesUpper Geyser Basin
Castle~13.5 hours (major eruptions)Upper Geyser Basin
Great Fountain~11.5 hoursFirehole Lake Drive — the only predicted geyser outside the Old Faithful area

Six geysers are actively predicted by rangers. Everything else in the park erupts on its own schedule, and Steamboat — the world's tallest active geyser, with majors over 300 feet — is entirely unpredictable (§03, Norris).

The highest-payoff short walk in YellowstoneGrand Prismatic Overlook Trail

1.2 miles (1.9 km) round trip, climbing 105 feet over 0.6 miles — gradual and well graded, to the purpose-built platform on the hillside above Midway. This is where every photograph of Grand Prismatic is taken from. Park at the Fairy Falls Parking Lot, 1 mile (1.6 km) south of Midway Geyser Basin — NPS describes that parking as "very limited." Allow 45–75 minutes including time on the platform.

Time this one against the light, not the crowds. This is the one thermal feature where you want the sun high — roughly 10 a.m. to 3 p.m. on a clear, warm day. Low morning light plus heavy steam hides the whole thing. On a cold or humid day you can do everything right and still see fog; build in the flexibility to come back on a warmer afternoon. Firm-surface trail, modest sustained grade — 105 feet over half a mile is a real climb for wheelchairs and for anyone with cardiac or respiratory limits.

1.2 mi RT · 105 ft climbBest 10a–3p, high sunFairy Falls lot fills early
1.2 mi (1.9 km) round trip
105 ft over 0.6 mi · 45–75 min

The postcard at ground level · 45–60 minMidway Geyser Basin & Grand Prismatic Spring

A short boardwalk loop over the Firehole River and across the sinter terrace, past Excelsior Geyser Crater and Grand Prismatic itself. The colour ring comes from thermophiles — colourless and yellow microbes in the hottest water, orange, brown and green in the cooler margins. The trailhead has wheelchair-accessible parking, boardwalk and restrooms, making it one of the better accessible thermal stops.

Two honest notes. First, from the boardwalk you cannot really see Grand Prismatic — you're at ground level beside a very large pool venting steam, so you get colour at your feet and a lot of fog. Do the overlook as well. Second, NPS's own two pages give different diameters: the Grand Prismatic place page says 200–330 feet across and more than 121 feet deep; the Explore Old Faithful page says 370 feet. The park's sources disagree, so we print both. Parking here is the worst in the park — NPS states it is limited "especially 10 a.m.–6 p.m." Be there before 9 a.m. or after 6 p.m.

Short boardwalk loop · 45–60 minAccessible parking & boardwalkWorst parking in the park
Boardwalk loop · fully flat
NPS: parking limited 10a–6p

The best free overhead view in geyser countryObservation Point & Solitary Geyser

1.6 miles (2.6 km) there-and-back to a hillside bench looking straight down on Old Faithful — a categorically different experience from standing in the crowd at the benches. You can add 0.9 miles (1.4 km) by continuing west to Solitary Geyser, a frequent erupter, then dropping to the Geyser Hill boardwalk. From the Visitor Education Center, walk ~0.3 miles counter-clockwise along the boardwalk, turn right at the Geyser Hill sign, and find the trailhead just after the bridge over the Firehole River.

Time it to a predicted eruption and give yourself thirty minutes of margin, not fifteen — misjudge it and you'll be climbing while the eruption happens below you. Uphill with switchbacks; not accessible. This is the best-value ninety minutes at Old Faithful and almost nobody does it.

1.6 mi RT · +0.9 mi to SolitaryTime it to a predictionSwitchbacks · not accessible
1.6 mi (2.6 km) there-and-back
60–90 min + eruption wait

Flat, paved — and longer than people expectMorning Glory Pool

The Upper Geyser Basin's most photographed hot spring, and quietly its saddest: decades of coins and debris thrown into the pool clogged its vent, cooled the water, and shifted the colours from deep blue toward green and orange at the margins. It sits at the far end of the basin trail system, paved and boardwalked the whole way and essentially flat — one of the longest genuinely wheelchair-navigable routes in the park. Walking out you pass Castle, Grand, Riverside and Daisy, giving you several chances to intercept a predicted eruption. Allow 1.5–2.5 hours round trip.

Distance disclosure: it sits roughly 1.5 miles out from Old Faithful, so about 3 miles round trip — but NPS publishes no single clean point-to-point mileage for it on the pages we reviewed, so treat that as an estimate and check the basin map at the Visitor Education Center. People underestimate this walk because it's flat. At 7,300+ feet, in full sun, on a hot August afternoon, with no shade and no water on the trail, it hurts more than the map suggests. Carry water.

~1.5 mi each way (estimate — confirm on basin map)Paved & flat the whole wayNo shade, no water on trail
~3 mi round trip · flat & paved
1.5–2.5 h · 7,300+ ft
A bleached treeless expanse of pale sinter and steaming fumaroles crossed by boardwalk, with dead standing trees and low ridges beyond under cold morning light, Norris Geyser Basin Yellowstone, ultrarealistic photograph representative of the region
Norris — the hottest, oldest and most dynamic thermal area in the park. Recorded temperatures reach 459°F at 1,087 feet below the surface. It looks and feels different from the Firehole basins: harsher, more acidic, bleached, more alien. The 143-space lot regularly fills, and rangers direct traffic at the junction.

Norris Geyser Basin

Two trail systems: Porcelain Basin, 3/4 mile of boardwalk and bare ground through open treeless terrain, and Back Basin, 1.5 miles through heavily wooded country. Allow 2–3 hours for both, 1 hour for Porcelain alone. Also here: the 1929–30 Norris Geyser Basin Museum (a National Historic Landmark) and the Museum of the National Park Ranger in the historic Norris Soldier Station.

Parking — the most precisely documented in the park: 143 total spaces, 17 oversized, 5 ADA. NPS states it "regularly fills during summer." Be there before 9 a.m. Mixed boardwalk and bare ground with grade changes down into both basins — less accessible than the Firehole basins.

Porcelain 3/4 mi · Back Basin 1.5 mi143 spaces · fills by 9a

Steamboat Geyser — manage your expectations

In the Back Basin: the world's tallest active geyser, with major eruptions more than 300 feet high. And NPS is blunt — "Steamboat's minor and major eruptions are entirely unpredictable." Scientists do not understand what triggers it.

It resumed activity in 1961 after ~50 years dormant, went erratic, then began its current eruptive period on March 15, 2018 after a 3.5-year dormancy. Peak years were 2019 and 2020 at 48 eruptions each. Intervals run 3 days to several months with no discernible pattern. As of February 2026 it remained in its active phase with sporadic eruptions, and between majors it produces frequent minor eruptions of 10–40 feet. Plan to be delighted, not to schedule it.

Entirely unpredictableMinors 10–40 ft are common
🔴 Norris is the basin where boardwalk discipline matters most This is the park's most volatile thermal ground, and its features change behaviour — sometimes violently — with no notice. The crust here is thin and the water is acidic as well as scalding. It's also the basin where the boardwalk periodically gets rerouted because the ground beneath it changed. Obey closure signs without negotiating.

Fountain Paint Pot & Firehole Lake Drive

The one stop where you see all four types of hydrothermal feature — geyser, hot spring, mudpot and fumarole — on a single loop, about 8 miles north of Old Faithful. The Fountain Paint Pot Trail is an easy 0.5-mile (0.8 km) boardwalk loop, under an hour, and the first part is wheelchair accessible and perfectly level — a genuinely good accessible option. Add 30–40 minutes for Firehole Lake Drive, the one-way side loop that holds Great Fountain Geyser.

Honest note: the mudpots are seasonal in character — thick and dramatic in spring when groundwater is high, thinner and less impressive by late summer. NPS flags parking here as limited, again "especially 10 a.m.–6 p.m."

0.5 mi loop · first part accessibleMudpots thin out by August

Fairy Falls — and the bear rule that comes with it

A 200-foot (61 m) waterfall from the same trailhead as the Grand Prismatic Overlook. NPS gives either 5.4 miles (8.6 km) or 6.7 miles (10.7 km) round trip depending on route, 3–5 hours; from the Fairy Falls lot it's about 1.6 miles through young lodgepole to the falls, with an optional 0.6-mile extension to Spray and Imperial geysers. Rated easy and essentially flat. Combine it with the Overlook — same lot, one trip.

This is a documented grizzly area. NPS published a news release headed "Visitor injured by a grizzly bear while hiking near Fairy Falls; Always hike in groups of three or more." The easy rating and the parking lot lull people into hiking it solo with earbuds in. Groups of three or more, spray on your hip, make noise.

5.4 or 6.7 mi RT · 3–5 hDocumented grizzly area
Biscuit Basin & Mystic Falls — check before you drive there The Mystic Falls Trail is 2.4 miles (3.8 km) there-and-back, with a trailhead halfway around the Biscuit Basin boardwalk loop; you can turn around at the falls or climb switchbacks 500 feet to an overlook of the Upper Geyser Basin and loop back, adding 1.5 miles. But Biscuit Basin has been subject to closure — a hydrothermal explosion in recent years destroyed boardwalk and access has been restricted since. We could not confirm the 2026 open/closed status of the Biscuit Basin boardwalk or the Mystic Falls trailhead on the NPS pages we reviewed. Check Current Conditions and the Backcountry Conditions report before driving here; if Biscuit Basin is closed, Mystic Falls may be unreachable from this side. [VERIFY AT PUBLISH]
Parking, plainly Old Faithful has the largest parking infrastructure in the park and still saturates midday in July and August. The trap there is unique: people arrive, find the lot full, circle, and miss the eruption they drove two hours for. Arrive before 9 a.m. or after 5 p.m. Across the west side generally, being parked by 8 a.m. — not on the road at 8 — eliminates the parking problem entirely at Midway, Norris and Fairy Falls. Trails absorb people; parking lots don't. Do the crowded headliners early and late, and do the walks and drives midday.
04 / THE GRAND CANYON OF THE YELLOWSTONE

The waist of the figure-eight, and the best light is at breakfast

Twenty miles long, more than 1,000 feet deep, 1,500 to 4,000 feet wide, with the Upper Falls at 109 feet and the Lower Falls at 308 — nearly twice the height of Niagara. NPS suggests 1–2 hours for the canyon area, which is enough for a rim drive with stops. It is not enough to do both rims and the descent trails; budget half a day for that. Pets are not allowed on canyon trails, parking areas only.

A powerful waterfall plunging over three hundred feet into a deep gorge of ochre, cream and rust-coloured rhyolite walls with dark green forest along the rim, morning light and mist, Lower Falls Grand Canyon of the Yellowstone, ultrarealistic photograph representative of the region
Lower Falls, 308 feet. The canyon runs roughly west and Artist Point faces east onto it, which is why morning is not a preference here — it is the difference between a great memory and a scrum on a narrow railed platform. The rainbow in the mist is a morning phenomenon.

The iconic view · be there by 8:30 a.m.South Rim Drive & Artist Point

South Rim Drive begins 2.3 miles south of Canyon Junction, leading to the Upper Falls viewpoints and to Artist Point — the canyon's signature view, with the Lower Falls framed at the head of the gorge and the ochre-and-cream walls running out toward you. From Artist Point the South Rim Trail runs 2.6 miles (4.2 km) there-and-back to Point Sublime: a nearly empty rim walk five minutes from the most crowded viewpoint in Yellowstone. Thirty minutes for Artist Point alone; 2 hours with the Point Sublime walk.

The Artist Point lot is one of the two or three worst in the park — it fills by mid-morning and stays full. Before 8:30 a.m., or after 6 p.m. Good news on access: the second viewing area at Artist Point is wheelchair-accessible, and it's the best accessible canyon view in the park.

Artist Point 30 min · +2.6 mi to Point SublimeSecond viewing area accessibleLot full by mid-morning
South Rim Trail 2.6 mi (4.2 km)
there-and-back to Point Sublime

Four accessible overlooks, one-way flowNorth Rim Drive

A one-way scenic drive beginning 1.2 miles south of Canyon Junction, with four accessible overlooks — Lookout Point, Grand View, Inspiration Point and the Brink of the Lower Falls parking area. This is the rim for looking at the falls head-on and down into the canyon's most colourful walls. Allow 1–1.5 hours with stops; add 45 minutes if you descend to the Brink.

Because the drive is one-way, missing a lot means driving the whole loop again — an infuriating way to lose twenty minutes in August. Go early. NPS lists as wheelchair-accessible: the sidewalks at the Brink of Lower Falls parking area, and the path between Lookout Point and Grand View. Genuinely good by canyon standards.

4 overlooks · 1–1.5 hTwo accessible sectionsOne-way — no second chances
One-way rim drive
begins 1.2 mi S of Canyon Jct

0.7 miles is a lie by omissionBrink of the Lower Falls Trail

A steep switchbacking descent off North Rim Drive to a railed platform directly at the lip where the Yellowstone River goes over the 308-foot Lower Falls. The volume and the noise at the brink is the most visceral thing in the park that isn't a geyser. 0.7 miles (1.1 km) out-and-back, 45–60 minutes: ten minutes down, thirty back up, and you will stop.

That 0.7-mile figure hides several hundred feet of vertical at 7,700+ feet, and everything you descend you must re-climb. This trail generates a steady stream of summer medical calls, most of them people who read "0.7 miles" and left their water in the car. NPS explicitly states the Brink of Lower Falls and Red Rock Point trails are not recommended for visitors with heart, lung or other health conditions. Take that at face value and enjoy the rim. The parking sidewalks are accessible; the trail is not.

0.7 mi out-and-back · 45–60 minNPS: not recommended with heart/lung conditions
0.7 mi (1.1 km) out-and-back
several hundred ft vertical · 7,700 ft
Uncle Tom's Trail — do not build a day around it The historic Uncle Tom's Trail descends a long series of steel stairs partway into the canyon toward the base of the Lower Falls. We could not confirm its 2026 open/closed status on nps.gov. The South Rim has been subject to a multi-year rehabilitation project and this trail has been closed for extended periods. Confirm at Current Conditions or by calling the park on 307-344-7381 before you go — and have a plan that doesn't need it. [VERIFY AT PUBLISH]
05 / TERRACES, LAKE & HIGH COUNTRY

Travertine at Mammoth, a lake that will kill you like a winter one

Two of Yellowstone's most distinctive places sit at opposite ends of the park. Mammoth builds travertine terraces instead of silica geysers and changes on a timescale of months. Yellowstone Lake is the largest high-elevation lake in North America and looks like a summer lake in a way that gets people killed. Both are drive-up destinations with excellent accessible options — and both carry a specific hazard that isn't obvious from the parking lot.

Stepped chalk-white and orange travertine terraces with thin sheets of hot water flowing over their rims, dead standing trees and boardwalk stairs alongside, low late-afternoon light, Mammoth Hot Springs Yellowstone, ultrarealistic photograph representative of the region
Mammoth's travertine terraces. Hot water dissolves limestone underground and re-deposits it as chalk-white, cream and orange stepped basins. It is the fastest-changing thermal area in the park — a terrace that was spectacular five years ago may be grey and dead now, with something new flowing beside it.

The terraces — Lower and Upper

Lower Terraces: a network of boardwalks and asphalt walkways at the base. Some boardwalk sections are wheelchair accessible, but the rest has stairs or steep grades, and transitions from asphalt to boardwalk may require assistance. Allow 45 minutes for the Lower Terraces alone, 1.5–2 hours for both levels.

Upper Terrace Drive: a short one-way loop above the terraces. For accessible views, enter the drive and park in the designated parking on the left; the boardwalk begins on the right. Continue 0.7 miles around to Orange Spring Mound, which has accessible parking and a short boardwalk to an exhibit.

Best light: late afternoon and early evening. The travertine is white and glares hard at midday; low sun brings out the orange and cream banding.

Both levels 1.5–2 hPartial accessible routesBest in low evening light

Two cautions people walk straight into

The stairs. The trail from the Lower to the Upper Terraces includes steep boardwalks and several hundred stairs, and NPS describes it as strenuous and not recommended for people with heart, lung or other health conditions. Visitors start up it casually from the bottom without realising they've committed. If stairs are a concern, drive to the Upper Terrace and walk down instead.

The elk in town. Mammoth village has a resident elk herd that grazes the lawns between the buildings. In the September–October rut, bull elk are aggressive and have charged and injured visitors; in spring, cow elk with calves are equally dangerous. The 25-yard rule applies to elk, and it applies on the sidewalk outside the hotel exactly as much as in a meadow. During peak rut, bugling is often frequent even midday.

Several hundred stairs at 6,200 ftRut: Sept–mid-Oct, peaks ~20 Sept
🔴 Vehicle restriction — mark this one RVs and vehicles towing trailers are not permitted on Upper Terrace Drive. The roadway is steep and narrow. If you're in a rig, park below and walk, or skip the drive entirely. There is no discretion in this and no place to turn around once you've committed.
A vast cold high-elevation lake with dark blue wind-riffled water stretching to distant snow-streaked Absaroka peaks, a rocky shoreline of pale stones and scattered lodgepole pine in foreground, Yellowstone Lake Wyoming, ultrarealistic photograph representative of the region

Yellowstone Lake — and the number that matters

The largest lake at high elevation (above 7,000 feet) in North America: 131.7 square miles of surface, 141 miles of shoreline, 20 miles long by 14 wide, average depth 140 feet, deepest point around 410 feet, elevation 7,733 feet.

The critical safety number: from May through October, average lake temperatures are only around or above 50°F (10°C). This is a lake that looks like a summer lake and will kill you like a winter one — survival time after a capsize is measured in tens of minutes, and there are no lifeguards anywhere in the park. Morning is calmest; afternoon wind on this lake is serious.

~50°F May–October7,733 ft · 141 mi of shoreline

Storm Point Trail

A 2.3-mile (3.7 km) loop out to a rocky point on the lake's north shore — easy, largely flat, with marmot colonies on the point and excellent lake views. About 1.5 hours. Unimproved trail with sand sections, so not wheelchair-rated, though Lake Butte Overlook and the Fishing Bridge area both offer drive-up lake views.

Storm Point closes seasonally for bear activity. This lakeshore is prime spring and early-summer grizzly habitat and it is one of the park's more frequently closed day hikes. We could not confirm the exact 2026 closure dates — check the Backcountry Conditions report before driving to the trailhead. And the point is named Storm Point for a reason: weather crosses this lake fast and the point is fully exposed.

2.3 mi loop · ~1.5 h2026 bear-closure dates: confirm at source

Mount Washburn, from Dunraven Pass

The classic Yellowstone summit hike, to a fire lookout with interpretive exhibits at the summit shelter and 360-degree views over the caldera. 6 miles (9.6 km) round trip, 3–6 hours, rated STRENUOUS by NPS (a second NPS page gives 6.2 miles — trivial in practice). Trailhead: the Dunraven Pass lot, 4.5 miles (7.2 km) north of Canyon Junction; a second approach runs from Chittenden Road. Bighorn sheep are regularly seen on the upper slopes and July wildflowers are excellent.

NPS publishes neither an elevation gain nor a summit elevation on this trail page, so we print neither. Treat any figure you see elsewhere as unofficial. Access depends on Dunraven Pass being open — May 22 to October 12, 2026 — and even inside that window expect lingering snow into July.

6 mi RT · 3–6 h · STRENUOUSElevation gain: NPS publishes none
🔴 Washburn's four cautions, all from NPS, all worth repeating 1. Lightning above treeline — you are the tallest thing on an exposed ridge, and afternoon thunderstorms are routine. Start before 8 a.m. and turn around if the sky builds; do not summit into a storm. 2. No water on the route — carry everything. 3. Grizzly bears frequent the area in fall — groups of three or more with bear spray. 4. Not suitable for those with heart or respiratory issues — this is a strenuous climb starting near 9,000 feet. Plus: stay on trail to protect alpine vegetation, which recovers here on a decades timescale.
Steaming turquoise and cobalt hot spring pools rimmed with pale sinter sitting directly on a lake shore, boardwalk between them and distant mountains across the water in low sunrise light, West Thumb Geyser Basin Yellowstone, ultrarealistic photograph representative of the region

West Thumb Geyser Basin — the best accessible thermal stop

The most scenically situated thermal area in the park: a compact basin sitting right on the shore of Yellowstone Lake, so you get steaming blue pools with the lake and the Absarokas behind them, including the famous Fishing Cone at the waterline. An easy, boardwalked 0.6-mile (1 km) trail, about 45 minutes. Facilities: information kiosk, vault/composting toilets, marked trail access.

Short, flat and fully boardwalked — one of the most accessible thermal basins in Yellowstone and the best choice for anyone with limited mobility who wants a real geyser-basin experience. Best at early morning or sunset: it faces east over the lake and low sun through steam over water is unmatched.

NPS's warning for this site is blunt: "Hydrothermal water can severely burn you." Stay on boardwalks, do not run or push, and supervise children at all times. The lakeside setting makes this feel like a beach walk. It is not.

0.6 mi · fully boardwalkedBest at sunrise or sunset
06 / LAMAR & HAYDEN

The two valleys, and why the whole trip bends around dawn

Lamar and Hayden are the reason people come back to Yellowstone after they've seen the geysers once. They are not attractions with parking lots — they are long open valleys you drive slowly and glass with optics from pullouts, and they perform at first light and last light. Everything else in this guide can be rearranged. This cannot. If you want wolves, you sleep near the valley and you are in it before the sun is.

A scattered herd of bison grazing across a broad open glacial valley of golden grass with a slow river and dark forested ridges beyond, cold mist and low first light, Lamar Valley Yellowstone, ultrarealistic photograph representative of the region
Lamar Valley at first light. NPS describes the northern range as "one of the best places in the world to watch wolves." Ninety percent of Yellowstone wolves' winter prey is elk, and average pack size is about ten animals. The road through here is also the only park road open to cars year-round.

Lamar Valley — the honest version

The broad glacial valley along the Northeast Entrance Road between Tower Junction and Cooke City, reliable for bison, elk, wolves and grizzly bears. The northern range is critical winter habitat for large animals, which is what supports the wolf packs.

You will very likely see wolves as distant moving dots, not as the close encounters in documentaries. A spotting scope is not optional equipment here; it is the equipment — 15× binoculars minimum, a 20–60× scope on a tripod ideally. And the single most effective strategy available to a visitor: find the cluster of tripods, park legally, walk up quietly, and ask. The regulars are in the same pullouts every dawn with serious optics and are, almost without exception, generous about letting a polite stranger look through a scope.

Some mornings there are no wolves. That is normal and not a failure of planning.

Scope, not binocularsYear-round road access

Hayden Valley — Lamar's lower-loop answer

A broad open valley along the Yellowstone River between Canyon and Fishing Bridge. Bison live here year-round and congregate for breeding, with a central herd numbering around 1,300 animals. Its advantage over Lamar is simple logistics: it's on the lower loop, so it's an easy add to a Canyon or Lake day. Sixty to ninety minutes of slow driving with stops is a reasonable minimum.

Worth knowing: Yellowstone is the only place in the United States where bison have lived continuously since prehistoric times, it is the nation's largest bison population on public land, and it has not been hybridised through interbreeding with cattle. Wolves and grizzlies are the only large predators of adult bison.

Hayden Valley is also where visitors get hurt — see §07. Bison jams here are frequent and stop traffic for 20+ minutes; bison legally have the right of way and walk the road when they please.

~1,300-animal central herdWhere the 2026 goring happened
Pullout etiquette — this matters, and people get it wrong Park only in designated pullouts, entirely off the roadway, all four wheels off the pavement. Stopping in the travel lane is the single most common cause of the dangerous jams out here. Do not slam to a stop when you see a cluster of cars — signal, slow, pull in. Close doors quietly. Don't shout. Don't slam tailgates. Sound carries enormously across an open valley at dawn and will move animals off. Never point at or call to animals to get their attention, and never play recorded calls. Do not cross the road into the meadow to get closer — the 100-yard rule for wolves and bears is a legal minimum, not a target. Leave the pullout as you found it and don't block other people's scope sight lines.

And a real hazard nobody mentions: Lamar's road is narrow, has limited shoulders, and carries fast-moving traffic between two entrances. Standing on the pavement with a camera at dawn, in low light, in dark clothing, is genuinely dangerous. Stand behind your vehicle, not in the lane.

On dawn timing — what's official and what's judgement Practically: be in the valley 30–45 minutes before sunrise, and again for the last ninety minutes of light. We want to be straight about the provenance of that, though — the NPS Lamar and Hayden pages we reviewed do not state specific optimal viewing hours. The dawn/dusk guidance is the near-universal consensus of wildlife-watching practice plus the park's own general advice that predators are most active then. It is judgement built on official guidance, not a quoted NPS figure. It is also the single highest-leverage decision in this entire guide.
A grizzly bear moving across open sagebrush meadow above a river bend at a considerable distance, dark forest edge behind and low golden light across the grass, Hayden Valley Yellowstone, ultrarealistic photograph representative of the region
Hayden Valley. The animals here are habituated to cars and utterly not habituated to people. This is a telephoto image made from a legal distance — 100 yards from bears and wolves, 25 from everything else, is the law, and rangers write citations for it.

Legendary trout water, serious bear countrySlough Creek Trail

A side road and trail off the Lamar Valley road — superb wolf-watching country, a famous trout fishery, and the campground that is now the only in-park bed in the Lamar (§08). 3.4 miles (5.4 km) there-and-back, following a historic wagon trail toward the Absaroka-Beartooth Wilderness; an optional continuation adds 2.6 miles (4.2 km) to the second meadow, for 8.6 miles (13.6 km) total. Two to three hours to the first meadow, a full day to the second. Trailhead lot off the campground road — a rough gravel spur, and a small lot.

This is serious grizzly and wolf country — precisely the habitat quality that makes it good for watching is what makes it dangerous for walking. Groups of three or more, spray on the hip, noise on blind corners. Steep initial climb; not accessible. The first meadow is also a notorious mosquito factory in early summer.

3.4 mi RT · 8.6 mi to second meadowGrizzly and wolf habitat
3.4 mi (5.4 km) there-and-back
+2.6 mi to the second meadow

Best effort-to-payoff in the northeastTrout Lake

A small, high, absurdly pretty lake near the Northeast Entrance. 1.2 miles (1.9 km) lollipop loop, 45–75 minutes. Otters are regularly seen here, and in early summer — roughly June, depending on the year — cutthroat trout run up the inlet stream in numbers you can watch from the bank. Morning is best for both.

The trailhead is a very small, unmarked-feeling pullout on the Northeast Entrance Road, easy to drive past, holding perhaps a dozen cars. Early or late. The climb from the pullout is short and genuinely steep — surprising for a "1.2 mile easy" hike — and this is bear country close to the road. The short distance tempts people to leave spray in the car. Don't.

1.2 mi lollipop · 45–75 minTiny pullout · steep start
1.2 mi (1.9 km) lollipop loop
short but steep from the road
A narrow waterfall dropping over a hundred feet between tall eroded volcanic pinnacles into a forested gorge, columnar basalt cliffs beyond, warm morning light, Tower Fall Yellowstone, ultrarealistic photograph representative of the region

Tower Fall — and a closure older guidebooks miss

A 132-foot (40 m) waterfall dropping through eroded volcanic pinnacles, viewable from an overlook a short walk from the Tower General Store. Twenty to thirty minutes; add twenty for nearby Calcite Springs, which marks the terminus of the Grand Canyon of the Yellowstone with geothermal features and columnar basalt cliffs. Short paved walk to the overlook — reasonably accessible.

The trail to the base of Tower Fall is CLOSED. NPS: "The lower part of the trail is closed because of severe erosion." It has been closed for years, and people still arrive expecting to hike it because older guidebooks describe it. The overlook is the experience. An alternative 0.75-mile walk past the overlook gives views of Tower Creek meeting the Yellowstone River.

Note this stop sits on the Tower–Canyon segment over Dunraven Pass, open only May 22 – October 12 in 2026 — outside that window you approach from Mammoth. Also in this area: the Petrified Tree (ancient redwoods preserved 45–50 million years ago), Specimen Ridge (the largest concentration of petrified trees in the world), and the Lamar Buffalo Ranch buildings, survivors of the early-20th-century bison conservation effort and now a base for educational programmes.

132 ft · overlook 20–30 minBase trail CLOSED — erosion
Beaver Ponds Trail — the town walk that isn't one The overlooked local hike out of Mammoth: a 5-mile (8.3 km) loop that begins and ends in the developed area, rambling through sagebrush meadows and stands of trees, rated moderate, 3–4 hours. You start from the village, so parking is village parking — much easier than a trailhead lot. Early morning or evening for wildlife; the sagebrush sections are hot and exposed midday. But it leaves the developed area quickly and travels through prime bear and moose habitat with limited sight lines in the tree stands. It feels like a town walk for the first ten minutes and then it isn't one. Groups of three or more, bear spray, make noise — the standard Yellowstone hiking rule applies here despite the trailhead being in a village.
07 / SAFETY — READ THIS FIRST

Visitors arrive braced for the wrong things

People come to Yellowstone worried about grizzlies in the backcountry. What actually hurts them is a bison in a parking area at mid-morning, and ground beside a boardwalk that looks solid and isn't. This section is not filler and it is not padding — every figure in it comes from the National Park Service, including the incident record, and the pattern in that record is the whole lesson.

🔴 The two distances. Memorise them. They are law, not etiquette. 100 yards (91 m) minimum from bears, wolves and cougars. 25 yards (23 m) minimum from all other animals — bison, elk, moose, birds. Rangers write citations for both. A rough field check: at 25 yards a bison fills your phone screen only if you zoom. If it fills your frame unzoomed, you are too close and you are breaking the law.

Bison — the most dangerous animal here

This is the counterintuitive fact visitors refuse to internalise, and NPS states it directly: bison "have injured more people in Yellowstone than any other animal" despite appearing calm, and they "can run 3x faster than humans."

The documented recent record, each one an official NPS news release: a 12-year-old injured on June 26, 2026 at about 9:15 a.m. near Mud Volcano, just north of Fishing Bridge, transported to hospital. A 47-year-old man gored in the Lake Village area on May 4, 2025 after approaching too closely. A man gored in the Upper Geyser Basin at Old Faithful at about 9:45 a.m. in 2025, after a large group of visitors crowded a bison. A man gored on June 10, 2025. A woman gored on June 1, 2024. Two gorings in three days in June 2022.

The pattern is the lesson. These are not remote backcountry maulings. They happen mid-morning, in developed areas — Old Faithful, Fishing Bridge, Lake Village — to people who walked toward an animal that looked placid, often because a crowd had already formed and it felt sanctioned. Crowds create a false sense of safety. A boardwalk is not a barrier.

If a bison charges: NPS says run away, and use bear spray if needed. Note that this is the opposite of bear guidance. Know which animal you are dealing with before you need to decide.

Injures more people than bearsIncidents cluster mid-morning, in developed areasCharged by bison: RUN

Thermal features — the ground is a lid

NPS: "More than 20 people have died from burns suffered after they entered or fell into Yellowstone's hot springs." And: the ground surrounding these features "may look solid, but it can be thin crust with super-heated water below." It looks like dirt. It is a lid. People have broken through and died.

Stay on boardwalks and designated trails — this is not a request about protecting scenery. Burns from thermal features are a common cause of serious injury and death. Hold children's hands. Don't run on boardwalks. Don't push. Falls from boardwalks into thermal water are a recurring injury mechanism, which is exactly why West Thumb's own signage says it.

Pets are prohibited on boardwalks and thermal trails. And never touch or scratch the microbial mats — the coloured margins are living organisms and take years to recover.

20+ deaths from thermal burnsBoardwalks only · no pets · no running
🔴 There is no legal thermal soaking in Yellowstone in 2026 — none, anywhere Every year people arrive planning to soak, because a blog post told them to. Here is the current status, verified: Boiling River is closed to swimming — NPS states "swimming is not possible at Boiling River because of the impacts to the river from the 2022 floods." This was the park's famous legal hot-spring soak, where a thermal creek met the Gardner River, and it has not reopened. The Firehole Canyon swim area is closed, with an estimated opening no earlier than late summer or early fall — and it normally stays closed until mid-summer each year anyway, because of high water and strong currents from snowmelt. Verify before driving there. Separately and permanently, soaking in hot springs is prohibited park-wide to protect the thermal ecosystems, and swimming in thermal features is prohibited outright. Where swimming is permitted at all, there are no lifeguards anywhere in the park and most waters are dangerously cold.

Bears — the four rules, and the statistic behind them

This is one of the starkest safety statistics in the National Park System, and it is free to act on: "Since 1970, 91% of the people injured by bears in Yellowstone were hiking alone or with only one hiking partner. Only 9% of the people injured by bears were in groups of three or more people."

1. Hike in groups of three or more. Group size is the single most effective bear-safety measure available to you. 2. Stay on maintained trails and make noise — especially near running water, in dense brush, and on blind corners. 3. Avoid hiking at dusk, dawn or at night. 4. Carry bear spray, know how to use it, keep it accessible.

In an encounter: DO NOT RUN. Running triggers pursuit. Stay 100 yards from any bear. Bear activity is current, not theoretical — the park reported its first grizzly sighting of 2026 in spring, hikers were injured by a bear in 2026, and a hiker was hospitalised after a grizzly encounter in September 2025. Male grizzlies emerge from hibernation in early March, females with cubs in April and early May — and females with cubs are the highest-risk encounter of all.

91% of injuries: parties of 1 or 2Bear charge: DO NOT RUN

Resolving the dawn contradiction

You have just read two pieces of official advice that pull against each other. Wildlife watching is best at dawn and dusk. NPS also tells you to avoid hiking at dawn and dusk. Both are correct, and the resolution is simple and worth stating out loud because a lot of visitors never square it:

Watch from the road at dawn. Hike mid-morning. Lamar and Hayden are roadside activities done from pullouts with optics — you are beside your vehicle, not in the brush. Then put your boots on once the light is up and the bears have moved off the open ground. That sequence gives you the wildlife and the trails without ever putting you in dense cover in low light.

Bear management areas close parts of the park seasonally to protect bears and people, and the closures change year to year — NPS adjusted the rules as recently as 2024. Check the Backcountry Conditions report before every hike, not just before the trip.

Watch at dawn from the roadHike mid-morning
🔴 Bear spray: how to carry it, and the flight problem Carry it in an easily accessible holster on your hip or chest — not in your pack. A canister buried in a backpack is a souvenir, not a defence; charges happen in seconds. Spray when the bear is 30–60 feet (9–18 m) away, to create a wall of spray between you and the animal. It must be EPA-approved with a valid expiration date. "Bear spray is a deterrent, not a repellent. Do not apply bear spray to your body or gear" — people genuinely do this, and it attracts bears. And it "can explode if it reaches 120 degrees Fahrenheit (49°C)": never leave a canister in a closed car in summer sun, on a dashboard, or in a hot tent vestibule. NPS states bear spray is "proven to be highly successful at stopping aggressive behavior in bears."

✈️ If you're flying in, you cannot bring it. Confirmed. TSA prohibits bear spray in both carry-on AND checked baggage. FAA rules permit only one self-defence spray of 118 ml (4 fl oz) or less with 2% or less tear gas, checked only — no commercially sold bear spray canister meets that limit. It also cannot be shipped by air as hazmat. This is exactly why the rental network exists, and why there is a kiosk in baggage claim at Jackson Hole Airport and vending machines at chambers of commerce in Bozeman and Belgrade. Fly-in visitors: plan to buy on arrival or rent, and plan to leave it behind. See §09 for where.

Food storage — the list is broader than you think

In frontcountry campgrounds: food, coolers, cookware and all scented items must be stored in a hard-sided vehicle or a bear box when not in immediate use — never left on a picnic table, never in a tent.

In the backcountry: each of the park's 293 backcountry campsites has either a food storage pole or a bear-resistant box, and you are required to use it at all times except when actively cooking or eating. Hanging requires at least 35 feet of rope — bring it. Keep your sleeping area at least 100 yards from your cooking, eating and food storage areas.

What counts as an attractant, quoted: "All odorous items such as empty food containers, water bottles which contained flavored drinks, lip balm, sunscreen, lotion, make-up, toothpaste, and medications must be stored the same way you store food and garbage." Sunscreen and lip balm go in the bear box. So does the empty Gatorade bottle. This is the rule people break.

Sunscreen, lip balm, toothpaste — all of it35 ft of rope for a hang

Forest-service food storage orders — legally enforceable

Outside the park boundary the rules do not relax, they change hands. Custer Gallatin National Forest carries a food storage order in effect March 1 – December 1, 2026 across the Bozeman, Hebgen Lake, Gardiner, Yellowstone and Beartooth districts. There are three compliant methods: (1) a hard-sided vehicle or enclosed trailer with the windows closed; (2) an IGBC-certified container; (3) suspended at least 10 feet up and at least 4 feet from adjacent trees or poles. Violators may be cited and held civilly liable.

Spell this out for yourself before you pack: a soft-sided pop-up or a rooftop tent is NOT legal food storage, even at a campground where tent camping is allowed. Eagle Creek's per-site bear boxes near Gardiner solve it; the primitive sites do not. Shoshone National Forest carries its own orders — the specific 2026 rules vary by ranger district and we could not verify all of them, so check the district before you rely on any of it.

A rooftop tent is not food storageCuster Gallatin order: Mar 1 – Dec 1
Sloppy camping kills bears — and that's not a slogan Yellowstone has killed habituated, food-conditioned bears; the park issued a news release about exactly that in 2025. A bear that learns to associate campsites with food usually ends up dead. Every item you leave on a picnic table is a small contribution to that outcome. The bear box is not about your sandwich. It's about the bear.

Water, cold & altitude

Drink only treated water — untreated surface water carries giardia and other parasites. Stream crossings are dangerous: park waters are "cold, fast, and more than thigh-deep," and NPS describes backcountry fords as "25 feet wide, 3 to 6 feet deep, extremely cold, and swiftly running." Hypothermia is a year-round risk and most cases occur at 30–50°F — not in a blizzard, but on a wet, windy 45°F afternoon in a cotton t-shirt.

Altitude sickness is common above one mile. Most of the park sits above 7,000 feet and so do most trails. Headache, nausea, shortness of breath, dizziness — descend if symptoms appear, and give yourself an easy first day.

Weather

Afternoon thunderstorms are routine, with gusty south-to-southwest winds and real lightning risk. That is why every exposed hike in this guide says start early. Winter weather is possible in any season — snow in July on the high passes is normal, not exotic. Snow lingers on trails until late May or June, and some mountain passes stay snow-covered until late July.

Pack a real sleeping bag and a warm layer in August. People shiver through July nights here every year because a forecast said 78°F and they packed for the daytime number.

Medical reality

Three in-park clinics, and only one is year-round: Mammoth Clinic, open year-round, 8:30 a.m.–5:00 p.m. in summer, ☎ 307-344-7965. Lake Clinic (summer only, 8 a.m.–8 p.m.) and Old Faithful Clinic (summer only, 7 a.m.–7 p.m.) run seven days a week in season; exact 2026 open and close dates were not confirmable.

These are clinics, not hospitals. Anything serious means a long ambulance ride or a helicopter, and from the park interior that is measured in hours. Nearest hospitals: Livingston MT (north), Big Sky/Bozeman MT (west), Cody WY (east), Jackson WY (south). Factor it into your risk tolerance for solo travel.

08 / THE CAMPING STRATEGY

Twelve campgrounds, two booking systems that don't talk to each other

This is the section that actually saves you a trip. Yellowstone has twelve frontcountry campgrounds split between two reservation systems, and getting that wrong is why people arrive with no site. Five are run by the concessioner — the big, developed, expensive ones. Seven are NPS and book on Recreation.gov — the small, primitive, cheap ones. One of those seven, Pebble Creek, is closed for all of 2026. And the park is too big to basecamp in one spot and see everything comfortably, so pick your campground by what you came for, not by what's available.

Concessioner campground2026 datesFeeSitesRV limitHookupsShowers / laundryDump
MadisonMay 1 – Oct 17$38 + tax27660 ftNoneNearest: Canyon (~45 min)Yes
Fishing Bridge RV ParkMay 8 – Oct 17$94 + tax31095 ftFULL — the only oneOn siteYes
Bridge BayMay 15 – Sep 13$38 + tax43160 ftNoneNearest: Fishing BridgeYes
CanyonMay 29 – Sep 19$45 + tax27240 ftNoneOn siteYes
Grant VillageJun 26 – Sep 26$45 + tax42950 ftNoneOn siteYes
Recreation.gov campground2026 datesFeeSitesRV limitToilets
MammothYear-round$258230 ft*Flush + vault
Tower FallMay 22 – Sep 27$203130 ftVault
Indian CreekJun 12 – Sep 14$207035 ftFlush
Lewis LakeJun 15 – Oct 11$208425 ftVault
Slough CreekJun 15 – Oct 12$201630 ftVault
Pebble CreekCLOSED FOR THE ENTIRE 2026 SEASON AND UNTIL FURTHER NOTICE — flood recovery work following the June 2022 floods. Formerly 27 primitive sites at 6,900 ft, 9 miles west of the Northeast Entrance.

*The Mammoth RV length data on the NPS page is internally inconsistent — a 30 ft figure sits alongside a 45 ft note — so check the specific site you're booking on recreation.gov. Park-wide maximum is 75 ft but individual sites are far shorter. None of the Recreation.gov seven has hookups, showers, laundry or a dump station. Vault or flush toilets and a water spigot is the entire amenity list.

🔴 Pebble Creek is closed — and this hurts more than one closure normally would Pebble Creek and Slough Creek were the two wildlife-watcher campgrounds for the Lamar Valley. With Pebble Creek gone, Slough Creek's 16 sites are the only in-park camping in the Lamar — and they are the hardest reservation in Yellowstone. Sixteen sites, released six months out on a rolling basis, gone within minutes. Northeast-corner campers should plan on the USFS campgrounds around Cooke City and Silver Gate, or on Mammoth, instead — and read the hard-sided warning below before you assume a tent is an option out there.
Fishing Bridge is the only full-hookup campground in Yellowstone — confirmed Water, sewer and electric at the site. It is also hard-sided units only — it sits in prime grizzly habitat on the Yellowstone Lake shore — takes the longest rigs in the park at 95 ft, and at $94 plus tax costs more than double anything else. There are no tents at Fishing Bridge. If you need hookups inside the park, this is the only answer, and it books out months ahead. If it's out of budget, the honest alternative is a gateway-town RV park and a day-trip in — which costs you the dawn start, and the dawn start is the whole game.

And note Grant Village's June 26 opening. It is the last campground in the park to open and one of the shortest seasons, closing September 26. Anyone planning an early-June lake-and-Tetons trip around Grant needs a different basecamp — this is a July, August and early-September campground only.

Which campground for which trip

  • Came for wildlife — the Lamar Valley: Slough Creek (16 sites, $20, Jun 15–Oct 12) puts you in the valley and is the single best wildlife basecamp in the park. Fallbacks: Mammoth (year-round, ~1 h 30 to deep Lamar) or the USFS campgrounds around Cooke City. Do not try to day-trip Lamar from Canyon or Madison — you'll arrive after the animals have bedded down
  • Came for the canyon and the falls: Canyon ($45, 272 sites, May 29–Sep 19, 40 ft) sits at Canyon Village within walking-to-short-driving distance of Artist Point, Lower Falls and the North Rim drive, with showers and laundry on site. Most central campground in the park and the best all-round compromise if you only get one — plus Hayden Valley is right there. Catch: second-most expensive, large and busy, and Dunraven cuts your northern access in shoulder season
  • Came for geysers: Madison ($38, 276 sites, May 1–Oct 17, 60 ft) — ~35–45 min to Old Faithful, ~20 min to Norris, on the Madison River, with the longest season of any campground and only 30 minutes from West Yellowstone for resupply. Catch: no showers on site, and no cell service at all — Madison is a dead zone despite being a major junction
  • Came for the lake, or combining with Grand Teton: Grant Village ($45, 429 sites, Jun 26–Sep 26, 50 ft) on the southwest shore, ~35 min from the South Entrance, with showers, laundry, a gas station and a general store. Catch: that June 26 opening
  • Big rig, need hookups: Fishing Bridge RV Park. No alternative exists
  • Shoulder season or winter: Mammoth ($25, 82 sites, year-round) — the only campground open outside the summer window, on the only year-round road, and at 6,200 ft the lowest and warmest. First-come, first-served October 15 – April 1. Gardiner is 5 miles away for real groceries and fuel
  • Cheap and quiet: the $20 primitive tier. Indian Creek (70 sites, between Mammoth and Norris) is the sleeper pick — big, quiet, flush toilets, central-north. Lewis Lake (84 sites) is the southern option with a 25 ft limit that keeps it tent-friendly. Tower Fall (31 sites) is well-placed for the northeast but has a short season and sits on a busy junction

Booking — the timing, exactly

Recreation.gov (the seven NPS campgrounds): reservations open exactly six months before your stay date, on a rolling basis. Set a calendar alarm. Slough Creek's 16 sites vanish within minutes.

The concessioner (the five big campgrounds): same 13-month window as in-park lodging. On the 5th of each month, reservations open for that entire same month of the following year — so on April 5, 2026 you book April 1–30, 2027. Online opens at midnight Mountain time; phone at 7:00 a.m. There is no waitlist and no way to book further out. One useful trick: if your stay begins in that 13th month, you may extend up to 4 additional continuous nights into the following month at the same lodge and room type before that month officially opens.

Mammoth is the exception — first-come, first-served from October 15 to April 1, and the only reliable walk-up option in the shoulder and winter seasons.

The blunt version: Yellowstone in summer is not a spontaneous trip if you want to sleep inside the park. Either plan 6–13 months out, or plan to stay in a gateway town and drive — and accept losing dawn.

NPS: exactly 6 monthsConcessioner: 13 months, on the 5thSlough Creek goes in minutes
The honest recommendation for a first-timer with 5–7 days Split it. Three nights at Madison for geysers, Old Faithful, Norris and easy West Yellowstone resupply, then three nights at Canyon or Mammoth for the canyon and the wildlife valleys. One basecamp means you will spend your holiday driving 45 mph behind an RV. Two basecamps costs you one afternoon of moving camp and buys you two dawn positions instead of one.
An overland rig with a rooftop tent and awning at a quiet lodgepole-pine campsite with a bear box and picnic table, low golden light through the trees, Yellowstone plateau campground, ultrarealistic photograph representative of the region
Every bed here sits at 6,500–8,000 feet. Sleep, hydration and exertion all change at that elevation, and so do your water lines — which is why dump stations and spigots shut off in shoulder season. Bring a real sleeping bag in August. Store the sunscreen with the food.

Showers & laundry — three places, park-wide

Fishing Bridge RV Park, Canyon Campground and Grant Village Campground. That's the whole list. $5.45 + tax per shower in 2026; children 5 and under free with a paying adult. Two showers per site per night are included with a reservation at those three only.

Bridge Bay and Madison campers pay — their nearest facilities are Fishing Bridge and Canyon respectively, and Canyon is roughly 45 minutes from Madison. Old Faithful and Mammoth have no campground shower house; paid showers exist at Old Faithful Inn, Old Faithful Lodge and Mammoth Hot Springs Hotel, but we could not verify the fee, and there is no laundry at either location. Operating hours vary by date and include a midday cleaning closure — confirm at source.

Camping the northern range? Gardiner's laundromat-with-showers is usually the better answer than driving to Canyon.

Dump stations — and a shoulder-season trap

In-park dump stations: Bridge Bay, Canyon, Grant Village, Madison and Fishing Bridge RV Park. There is none at Mammoth, Tower Fall, Slough Creek, Indian Creek or Lewis Lake.

Quoted from NPS: dump stations "may close when temperatures are below freezing." At 7,000–8,000 feet that means May and October are genuinely unreliable. If you're running an RV in shoulder season, do not plan your tank capacity around an in-park dump.

Dump station fees: no published 2026 figure exists on any official page, so we print none. Outside the park, Cody's city-run dump station is free and open year-round, with potable water May–September at $0.25 per 6 gallons — genuinely unusual, and worth routing for.

Generators

Generator hours are 8:00 a.m. to 8:00 p.m., prohibited from 8 p.m. to 8 a.m. This window is consistently stated and reliable.

Generators are permitted only at certain campgrounds — the NPS camping page marks Bridge Bay, Canyon, Fishing Bridge RV Park, Grant Village and Madison as generator campgrounds, and the primitive Recreation.gov sites — Slough Creek, Indian Creek, Lewis Lake, Tower Fall, Mammoth — generally prohibit them entirely.

A 60 dB limit is commonly cited but we could not verify it, and neither could we fully verify the per-campground permission list. Check your specific campground page on recreation.gov before relying on a generator.

Backcountry permits, 2026 — and the 25% fact worth knowing A permit is required year-round for all overnight stays in the backcountry; day hiking requires no permit. Fees: $5 per person per night recreation fee, plus a $10 reservation fee. The Early Access Lottery runs March 1–20 with notification March 25 and a booking window April 1–25, a $10 non-refundable application fee, and roughly 73% of applicants receive a timeslot — better odds than most park lotteries. General Access reservations open April 26 for the May 15–Oct 31 peak season and October 6 for the off-season, with a minimum 3 days' advance notice, a maximum 14 consecutive nights per permit and 3 nights per site.

The most useful fact here: about 25% of campsites are held for walk-ups. Walk-up permits are available in person at backcountry offices up to 2 days before your trip, debit or credit card only. If you missed the lottery and the reservation window, showing up in person two days out is a real strategy, not a long shot — especially midweek and outside the Lamar and Bechler hotspots. Offices: Mammoth, Tower, Bridge Bay, Grant Village, South Entrance, West Yellowstone and Bechler.

09 / OUTSIDE THE BOUNDARY

Gateway camping — where the value is, and where the tent bans are

When the in-park campgrounds are full, and in July and August they are, the gateway towns are the answer. The USFS campgrounds are the value play. But this is the part of the guide where we print the least and hedge the most, deliberately: fs.usda.gov returned an error to every direct retrieval attempt during research, so most Forest Service fees and season dates on these corridors were recoverable only indirectly. We have omitted almost all of them rather than print a number we could not stand behind. What follows is what we can defend — including two safety rules that are not optional.

🔴 HARD-SIDED CAMPING ONLY — Cooke City / Silver Gate. Read this before you book. Soda Butte, Colter and Chief Joseph campgrounds east of Cooke City are restricted to hard-sided recreational vehicles only. Tents and pop-up campers are prohibited. This is not a comfort guideline. The restriction was imposed in July 2010, after a grizzly sow with three yearlings pulled three separate people from their tents at Soda Butte Campground overnight — causing serious injuries and one fatality. Forest managers banned tent camping at three campgrounds near Yellowstone on the recommendation of grizzly bear experts, and the restriction remains in force because bears still frequent this corridor.

If you are tent camping and heading to the Northeast Entrance, you cannot stay at Soda Butte, Colter or Chief Joseph. With Pebble Creek closed, that leaves Slough Creek's 16 in-park sites or a campground further out on the Beartooth Highway. Plan it before you drive out there, because Cooke City is a long way from a second option.

🔴 HARD-SIDED CAMPING ONLY — the Wapiti Valley, west of Cody Three campgrounds on the North Fork corridor are confirmed hard-sided-only because of grizzly activity: Newton Creek, Eagle Creek (Shoshone NF) and Threemile. The Forest Service language is explicit — "hard-sided camping units only… tents and pop-up campers are not allowed." Note that this Eagle Creek is a different campground from the Eagle Creek near Gardiner — same name, different forest, opposite restriction. Don't confuse them.

Clearwater is the exact opposite — walk-in tent-only, so a hard-sided rig can't use it. Wapiti is the tent-friendly option in this valley, roughly 30 miles west of Cody by the historic Wapiti Ranger Station, with some electric sites and mandatory food storage in bear boxes. We could not confirm restrictions at Elk Fork, Big Game or Rex Hale — given that three campgrounds in this valley are confirmed hard-sided-only, assume any Wapiti Valley campground may carry the restriction until you verify otherwise. Wapiti Ranger District: (307) 527-6921.

🔴 There is effectively NO free camping on the Cody–East Entrance corridor This is the rule readers get wrong most often, and it is a forest order, not a guideline. Shoshone National Forest order SHO-23-002 prohibits dispersed camping AND campfires within half a mile of either side of the US 14/16/20 centerline, from the forest boundary all the way to the East Entrance, annually from March 1 to December 1. All camping and all campfires on that corridor must be in developed sites. If you were planning to pull off the North Fork Highway and sleep for free on your way to Sylvan Pass — you can't, and you'll be cited for it.

One more Cody-side change that alters how you plan: Shoshone National Forest has suspended reservations — the corridor campgrounds are first-come, first-served, with a 16-day stay limit. That flips Cody-side planning from "book six months out" to "arrive early and have a backup."

Gardiner, MT — the value play, and the year-round one

Eagle Creek Campground (Custer Gallatin NF) — 20 sites (18 single, 2 double), $15 single / $30 double / $5 extra vehicle, open year-round, 2 miles northeast of Gardiner on Jardine Road at 6,100 ft. Vault toilets, fire rings, horse corrals, a bear box at every site, no hookups, no potable water, no dump. Max 48 ft RV, gravel road and unpaved sites. Site 6 is closed for beaver damage.

At $15 a night, open year-round, two miles from the North Entrance, this is the best camping value anywhere near Yellowstone for a self-contained rig or a competent camper. And a genuinely useful local detail: sites 19 and 20 are held for stock users until 4 p.m., then release first-come for one night — real value at a campground that routinely fills.

Canyon (Yankee Jim) — 15 sites, $10, year-round, roughly 13–15 miles north, no potable water, first-come. Bear Creek has no vehicle access due to flood damage — walk-in only. Timber Camp's fee and season we could not verify.

Eagle Creek $15 · year-roundBear box at every siteBear Creek: no vehicle access

West Yellowstone, MT — and a dispersed-camping trap

The biggest and most commercial gateway, 14 miles / 30 minutes to Madison Junction, with a real supermarket, gear shops, laundromats and an airport with seasonal service. The Custer Gallatin campgrounds around Hebgen Lake — Baker's Hole, Rainbow Point, Lonesomehurst, Cabin Creek, Beaver Creek — are bookable on Recreation.gov. We are not printing their 2026 fees; the figures we recovered came via indirect retrieval and could not be confirmed against the official pages. Book and price them at recreation.gov.

One safety-critical open item: Baker's Hole has historically been hard-sided-only because of grizzly activity, and we could not confirm its 2026 status. Confirm directly on the Recreation.gov listing before booking a tent site there. Do not assume.

The dispersed trap: free dispersed camping is very limited on the Hebgen Lake district and is mostly restricted to fee campgrounds and designated dispersed sites. Arriving expecting open dispersed camping near West Yellowstone is a genuine and common mistake. Elsewhere on Custer Gallatin the general rules are 16 consecutive days at one site, no permit, 100 ft from water, existing sites only, pack it out — under the food storage order in §07.

Baker's Hole tent status: unconfirmedDispersed is very limited here
What we are deliberately not printing, and why 2026 commercial RV park rates. Almost no operator in West Yellowstone, Gardiner or Cody publishes them openly, and the figures floating around are visitor reports and stale cards. A wrong nightly rate in a paid guide is worse than no rate. Call the park you want. The same goes for most USFS fees and season dates on the Beartooth Highway and the Wapiti Valley: fs.usda.gov blocked direct retrieval throughout our research, so those numbers are the weakest-verified category in the whole issue and we have left them out. Verify at recreation.gov, or by phone — Gardiner RD (406) 848-7375, Wapiti RD (307) 527-6921. Two more corrections worth carrying: Sleeping Giant near Cody is now day-use only, not a campground, and aggregator sites mislabel the USFS Colter campground as a private RV park — it isn't, it's a first-come federal site, and there is no confirmed private campground in Cooke City or Silver Gate at all.

On Soda Butte's season, the sources disagree: one Forest Service figure gives July 1 – September 7, while the Recreation.gov listing describes it as roughly late June to Labor Day. We print both because we cannot tell you which is authoritative for 2026. Call the Gardiner Ranger District before you commit a drive to it — and remember it's hard-sided only regardless.

10 / PRACTICAL & SERVICES

Fuel is easy. Groceries are hard. Signal is a fantasy.

The park has just enough services to keep you alive and just few enough to punish poor planning. Two facts do most of the work: you can buy fuel at 2 a.m. in October with a credit card, and you cannot buy a week's groceries anywhere inside the boundary. Everything else follows from those.

Fuel — better than you'd expect

Seven stations, at Mammoth, Old Faithful (Upper), Old Faithful (Lower), Canyon, Fishing Bridge, Grant Village and Tower-Roosevelt Junction. Two facts worth planning around: every station has diesel — unusual for a national park — and "all service stations offer 24-hour, year-round credit card fueling." The store closes seasonally; the card pump does not. Repair services are listed at Old Faithful, Grant Village and Fishing Bridge only.

Propane: two official NPS pages contradict each other, so take only the safe version — bulk refill is reliably available at Fishing Bridge and Grant Village; bottle exchange is widely available elsewhere. Anything more granular we could not settle. Call ahead before relying on a refill.

Groceries — provision before you enter

Yellowstone General Stores operates around a dozen retail locations across the villages. Set expectations honestly: these are convenience and camp stores — snacks, ice, basic camp food, souvenirs, at park pricing. They are not a grocery run.

Note the spread of 2026 closing dates: Bridge Bay and one of the Old Faithful stores close September 13, Grant September 27, Tower October 4, Canyon and Fishing Bridge October 18. A late-September trip finds a meaningfully thinner park than an early-September one.

Full supermarkets: Bozeman and Livingston MT to the north, Cody WY to the east, Jackson WY to the south, Idaho Falls ID to the west. Cody is the best provisioning stop of the five gateways.

Cell & WiFi — assume none

NPS: "Cellular service is extremely limited in Yellowstone." Where there is any signal: the developed villages only — Mammoth, Old Faithful, Canyon, Grant Village, Lake Village, Tower-Roosevelt — plus Mount Washburn by line of sight and the Mammoth–Gardiner corridor.

Where there is none: Lamar Valley, Hayden Valley, Norris, Madison, Dunraven Pass, West Thumb and all backcountry — the majority of the park by area. Madison is a dead zone despite being a major junction and a major campground. Verizon is generally most reliable parkwide; AT&T is strongest at Canyon. Texting often works when calls won't, and village towers saturate in July and August.

In-park internet averages ~1.5 Mbps. Streaming does not work, and there is no WiFi at any campground in the park. Download offline maps before you enter. A claim circulating online that service covers "over 50 percent of the park" conflicts directly with the NPS language — disregard it.

Bear spray — where to get it, what it costs

Buying: sold at essentially every general store, gas station and park store in and around the park. We are not printing a purchase price — no official 2026 figure is published anywhere and the numbers circulating are secondary.

Renting — the sensible move for most visitors, and the only move for fly-ins. Bear Aware's published pricing is $16 for the first two days, dropping to $4/day after that, capped at $28. Rentals include a canister, holster, belt, a safety video and in-person instruction with an inert demo canister. A competing "start at $8" figure appears on the same operator's site — verify the tier structure at source. TrailQuipt publishes a comparable ladder from $16 for two days up to $28 for 8–14 days, plus resort tax and a refundable deposit.

In-park pickup: Canyon Village (kiosk by the Visitor Education Center, 307-828-1885) and Old Faithful (the Bear Aware yurt). Drop-off only: Fishing Bridge, Grant Village, Mammoth, Tower-Roosevelt, Madison Campground. Gateway pickup: West Yellowstone, Gardiner, Bozeman and Belgrade, Big Sky, Red Lodge, Jackson — and a kiosk in baggage claim at Jackson Hole Airport. Cooke City is drop-off only, and there is no verified rental operation in Cooke City — rent or buy in Gardiner. Canisters return to any of the operator's locations, so you can pick up in West Yellowstone and drop in Gardiner.

$16–28 to rent · cappedCannot fly with it, either bag

Fishing — the permits, and a number to ignore

Park fishing is governed by an NPS permit, not a state licence. 3-day $40 · 7-day $55 · season $75. The season runs from the Saturday of Memorial Day weekend through October 31, with some waters on extended seasons. Anglers 16 and over need the permit, available on Recreation.gov.

State fishing licences are NOT valid and NOT required inside the park. And ignore the widely-circulated "$10 for 10 days / $20 season" figures that still appear on blogs — they are badly out of date. The numbers above are the NPS 2026 figures.

Note also that the park has closed fishing after 2 p.m. in 2026 on some waters because of warm water and low flows — check current conditions rather than assuming an all-day season. Outside the park, Cooke City General Store issues licences for Yellowstone, Montana and Wyoming in one stop, which is genuinely handy if you're fishing both sides of the boundary. Guided walk-wade rates quoted by operators run into the hundreds per day; we could not verify current pricing, so confirm with the shop.

$40 / $55 / $75State licences not valid in the park
In-park dining — the fact that actually affects campers Reservations are required at the Old Faithful Inn Dining Room, Lake Yellowstone Hotel Dining Room, Grant Village Dining Room, and at the Mammoth Hotel Dining Room for dinner. The booking window is 60 days ahead for guests with an in-park hotel reservation and 30 days ahead for guests at other in-park lodges or campgrounds. Day visitors cannot book in advance at all — the only route is same-day availability at the host stand. Breakfast and lunch are first come, first served everywhere.

So: if you are camping, you get a 30-day window. If you are day-tripping from a gateway town, you have no window. Walk up early, be flexible, and have a backup. The Old Faithful Inn Dining Room is worth the effort for the room itself — the log lobby is the point.

On gateway-town restaurants — we're not listing any, on purpose Gateway-town restaurants in this ecosystem turn over frequently and close between seasons without notice. Recommending a restaurant that has since closed is worse than recommending none, and we could not verify current operating status for any of them. Use the chamber directories instead — they are the only sources that reliably reflect closures: West Yellowstone (destinationyellowstone.com/places), Gardiner (visitgardinermt.com — and note their dedicated Year-Round Businesses list, the single best page for off-season planning), and Cooke City (cookecitychamber.org/member-directory).
Gateway townEntranceYear-round road?Real grocery?Hospital?The character
Gardiner, MTNorthYes — the only oneYesNo — Livingston, which the chamber puts at 58 miles A real working town at the Roosevelt Arch, no box stores. Laundromat with pay showers — the best answer on the northern range. The densest guide and rafting town of the five
West Yellowstone, MTWestNo — entrance closed to cars in winterYesNo — Big Sky ~50 mi Biggest and most commercial, 14 mi to Madison. Two laundromats with showers, a year-round specialty gear shop, the best bear-spray rental market of the five. Snowmobile capital in winter
Cooke City / Silver Gate, MTNortheastOnly through the park in winterNo — general stores onlyNone, and it's far An outpost of roughly a hundred year-round residents. Two general stores, one confirmed fuel station at a premium, no verified public showers or laundry, no medical. Hard-sided camping only nearby
Cody, WYEast (~52 mi, Sylvan Pass)No — Sylvan Pass closed in winterYes — supermarketsYes A working Wyoming town and the best resupply of the five. Free year-round city dump station, 24-hour laundromats with RV parking, a long-established outdoor retailer. Public showers are the weak spot
Jackson, WYSouth, via Grand Teton NPNo — closed roughly Dec–AprYes — severalYes An expensive resort town — the cost-of-living gap against Cody is enormous. Best-served for groceries, bear spray and public showers, and it gets busier in winter for ski season, not quieter

Distances: Cody is ~52 mi / about 1 hour to the East Entrance; Jackson is ~57 mi / about 1 h 15 to the South Entrance in clean summer conditions, driving north through Grand Teton — a figure that wildlife jams routinely blow out. You need park admission for Teton on that route, but an America the Beautiful pass covers both.

🔴 Two claims we investigated and will not print A secondary source cites a bear spray purchase price and states that REI and Whole Foods operate in Jackson, Wyoming. We could not confirm that either retailer operates in Jackson, and it appears to be inaccurate — do not plan a gear stop around it. Jackson does have well-established independent outdoor retailers downtown. Separately, we found no confirmed KOA in Gardiner despite it appearing on aggregator sites, and could not confirm that one long-listed West Yellowstone RV park still operates. Aggregators in this ecosystem carry stale listings for years.
11 / TIMING

Four different parks, and two calendar dead zones

Yellowstone is functionally four different parks across the year, and picking the wrong season for what you want is the most common trip-planning mistake here. July draws 947,688 average visits — 23.57% of the year's visitation in a single month. November draws 14,323. Between those extremes sit two windows most people never hear about, when the park is closed to cars and closed to oversnow travel at the same time.

The shoulder gold — September to mid-October

This is the answer for most people who camp. Far fewer people than July while most services still run, fall colour in the aspen and cottonwood, and the elk rut — mating season runs September to mid-October, beginning early September and peaking around the 20th. The best viewing is, surprisingly, right in the town of Mammoth Hot Springs, where cow elk gather all summer and bulls arrive to chase, fight, bugle and mate in the middle of town.

The catch, and it's real: sudden snow, and services thinning fast. Dunraven Pass and the Beartooth both close October 12 — earlier than the October 31 general closure, and earlier still if storms hit. Store closing dates run from September 13 to October 18. Best weeks, honestly stated: roughly September 8 to October 5 — after the Labor Day crowds break, during the rut, before the passes close, while most services still run.

Sep 8 – Oct 5 is the sweet spotBull elk in rut will charge — 25 yd minimum

Spring — plowing, bears, and a bicycle window

Interior roads close for spring plowing from March 1, except Mammoth to the Northeast Entrance. Crews clear 198 miles of main road, 124 miles of secondary road and 125 acres of parking lots, plus 31 miles of the Beartooth Highway, every single spring.

What spring buys you: bear emergence — bears come out of dens hungry, searching for winterkill, and mothers with cubs emerge once baby bison and elk arrive, making this one of the best bear-viewing windows of the year. Baby animals. Very few people. And the spring bicycle window: before roads open to cars, cyclists can ride a 49-mile section of park roads from West Yellowstone once the plows have cleared the lanes. Car-free Yellowstone on a bicycle is a rare thing.

What it costs you: most roads and nearly all services closed, and some areas closed to all travel specifically because of bear emergence. Those closures are real and enforced.

Best bear-viewing windowBear management closures enforced
🔴 Winter access, stated plainly — one road, and two dead zones Only one road in Yellowstone is open to wheeled vehicles in winter: the North Entrance at Gardiner, through Mammoth, east through Lamar Valley to the Northeast Entrance at Silver Gate and Cooke City. It's open day and night, year-round, but snow tires or chains may be needed and storms close it temporarily. Everything else — Old Faithful, Canyon, Grand Prismatic, the entire geyser-basin core — is reachable only by commercially guided snowcoach or snowmobile, running December 15, 2026 – March 15, 2027 for the West, South and East entrances and all remaining groomed roads. Most snowmobile routes close March 7–9, 2027; the Fishing Bridge route extends to March 14.

Now the two windows nobody warns you about. November to mid-December, and mid-March to mid-April. In both, most of the park is closed to cars and closed to oversnow travel — you can neither drive in nor ride in. Only the North–Northeast road runs. November is the least-visited month of the year, and this is why. If you are planning a trip in either window, understand that you are planning a Gardiner-to-Cooke-City trip, and nothing more.

Why people do winter anyway: the northern range in winter is the best wolf-watching on earth — wolves visible against snow, elk and bison concentrated in the valleys, and Lamar as a wildlife theatre. Old Faithful in a snowstorm with a dozen people watching is a genuinely different experience from July. Mammoth Hot Springs Hotel is drivable because it's on the year-round road; the Old Faithful Snow Lodge operates December 16, 2026 – March 7, 2027 and is reachable only by oversnow travel. Twice-daily snowcoaches run between the two, driven by interpretive guides — so every mile is a guided tour.

The real risks, ranked

  • Bison in developed areas — more injuries than any other animal, clustering mid-morning at Old Faithful, Lake and Fishing Bridge. 25 yards, always
  • Thermal ground off the boardwalk — 20+ deaths; thin crust over super-heated water. Boardwalks only
  • Grizzlies while hiking — 91% of injuries were parties of one or two. Groups of three, spray on the hip, make noise
  • Cold water — Yellowstone Lake averages ~50°F May–October; a capsize is life-threatening, and there are no lifeguards
  • Altitude and afternoon storms — most trails above 7,000 ft; lightning above treeline is routine. Start early
  • The road itself — 45 mph, bison jams, chip-seal delays, and a cell dead zone across most of the park

When to go — by window

WindowWhat it's like
Apr – late MayBears out, few people, most roads still shut
JuneEverything opening; Grant not until Jun 26
July – mid-AugPeak — July alone is 23.57% of the year
Sep 8 – Oct 5The sweet spot — rut, space, services
Oct 12 / Oct 31Passes close, then most roads close
Nov – mid-DecDead zone — no cars, no oversnow
Dec 15 – Mar 15Guided oversnow only; one drivable road
Mid-Mar – mid-AprDead zone — plowing, nothing open

The pattern: the season is long but the useful hours in a summer day are short. Be parked at your headline stop by 8 a.m., do the walks and drives midday, and take the second window after 6 p.m. — Wyoming daylight runs well past 8.

12 / THE SHAPE OF A WEEK

Five days, built around dawn

This is an editorial synthesis, not an NPS itinerary — but every element in it is sequenced against two hard constraints: the figure-eight means you plan by loop, and the animals and the parking both reward the same 5 a.m. alarm. Split your nights: three at Madison for the geysers, then move to Canyon or Mammoth for the canyon and the valleys. Assume one 20-minute bison jam per day and stop resenting it.

01

Day 1 — Lower loop west, the geysers

  1. Dawn at Midway / Grand Prismatic. Parked before 9 a.m. — earlier if you can. Accept the steam; you're here for the lot
  2. Grand Prismatic Overlook mid-morning from the Fairy Falls lot — 1.2 mi round trip, 105 ft of climb. This is where the photograph is
  3. Old Faithful with a live prediction from the NPS app. Then walk the Upper Geyser Basin out to Morning Glory, intercepting Castle, Grand, Riverside or Daisy on the way
  4. Observation Point timed to a second predicted eruption — thirty minutes of margin, not fifteen
  5. Fountain Paint Pot late afternoon, plus Firehole Lake Drive if Great Fountain's window is near
Parked by 8–9 a.m.Base: MadisonNo cell service at Madison
02

Day 2 — Lower loop east, canyon & lake

  1. Dawn in Hayden Valley — pullouts, optics, engine off. Bison are certain; grizzlies are possible
  2. Artist Point by 8 a.m. East-facing onto a west-running canyon: morning light on the Lower Falls, and a platform you can actually stand on
  3. North Rim Drive and, if your heart and lungs are up to it, the Brink of the Lower Falls — ten minutes down, thirty back up
  4. West Thumb late afternoon or at sunset — the best light of the day over the lake, on 0.6 miles of flat boardwalk
  5. Storm Point if it's open — check the Backcountry Conditions report for bear closures first
Artist Point before 8:30Base: CanyonBrink: not for heart/lung conditions
03

Day 3 — Upper loop, Norris & Mammoth

  1. Norris before 9 a.m. — 143 spaces, and NPS says it regularly fills. Porcelain Basin in cold air is the reason to be early
  2. Back Basin and Steamboat. Expect minors, not a major; be delighted if you're wrong
  3. Mammoth Terraces midday. Drive the Upper Terrace loop and walk down if stairs are a concern — and remember no RVs or trailers on Upper Terrace Drive
  4. Beaver Ponds loop (5 mi, 3–4 h) in the afternoon, in a group of three, or hold the terraces for low evening light instead
  5. Elk in the village at dusk — from a distance. 25 yards applies on the hotel lawn
Norris parked by 9Terraces best in low lightNo RVs on Upper Terrace Drive
04

Day 4 — Northeast, the wildlife day

  1. In Lamar Valley 30–45 minutes before sunrise, with a scope. Find the cluster of tripods, park legally, walk up quietly, ask
  2. Trout Lake or Slough Creek mid-morning — this is the hike-after-the-watch sequence that resolves the dawn contradiction
  3. Tower Fall overlook — the base trail is closed and has been for years
  4. Over Dunraven Pass in the evening for bighorn sheep and caldera light. Only between May 22 and October 12
  5. If Mount Washburn is on your list, it takes this whole day and starts before 8 a.m. — swap the order and do the summit first
Valley before sunriseDunraven May 22 – Oct 12 onlySpray on the hip, groups of 3
Day 5, and the add-on Day 5 is your slack. Use it to redo whatever the weather, the steam or a bison jam took from you — Grand Prismatic on a warmer afternoon, Lamar on a second morning, or the Fairy Falls trail in a group. Do laundry and resupply between 10 a.m. and 4 p.m., never at dawn. The add-on worth building in: the Beartooth Highway as a half-day either arriving or departing via the Northeast Entrance — half a day to drive it properly with stops, best in the morning before afternoon storms build over the plateau. It is a destination, not a shortcut, and it only exists between roughly May 22–23 and mid-October.

Three rules that make all five days work: never plan a day that crosses the park twice — pick a loop. Eat at 11 or at 2, never at 12:30. And add construction time to every leg in 2026: up to 30 minutes for chip sealing, 15 at the Gardner River bridge, 10+ on Canyon–West Thumb on weekdays.

13 / TRIP-READY

The departure check

Run it before you leave. Tap each item as it's done — these are the ten things specific to Yellowstone that a general road-trip habit will skip. Almost all of them come back to three facts: the reservations are the bottleneck, the dawn start is the whole game, and the animals and the ground are more dangerous than they look.

0 / 10 confirmed — the alarm clock sets the schedule.
14 / QUICK ANSWERS

Asked at every Yellowstone entrance station

Can I soak in a hot spring in Yellowstone?
No — and this is the single most out-of-date thing on the internet about this park. Soaking in hot springs is prohibited park-wide to protect the thermal ecosystems, and both legal swim areas are closed. Boiling River — the famous legal soak where a thermal creek met the Gardner River — remains closed to swimming from 2022 flood impacts, with no reopening date. The Firehole Canyon swim area is closed, estimated to open no earlier than late summer/early fall. There is zero legal thermal soaking in Yellowstone in 2026.
What's actually the most dangerous animal here?
Bison. NPS states they have injured more people in Yellowstone than any other animal, and that they run three times faster than a human. A 12-year-old was gored near Mud Volcano on June 26, 2026 at about 9:15 a.m. and transported to hospital. The record shows these incidents cluster mid-morning, in developed areas — Old Faithful, Lake Village, Fishing Bridge — around animals that look placid, often after a crowd has already gathered. 25 yards from bison and elk; 100 yards from bears, wolves and cougars. If a bison charges, NPS says run — the opposite of bear guidance.
Which campgrounds are closed in 2026?
Pebble Creek, for the entire season and until further notice, for flood recovery following the June 2022 floods. It matters more than one closure normally would: Pebble Creek and Slough Creek were the two Lamar Valley wildlife campgrounds, so Slough Creek's 16 sites are now the only in-park camping in the Lamar. Note also that Grant Village doesn't open until June 26 — the latest opening in the park, which breaks early-June lake itineraries — and Bridge Bay closes September 13, the earliest.
Is Fishing Bridge really the only campground with hookups?
Yes, confirmed. Fishing Bridge RV Park is the only full-hookup campground in Yellowstone — water, sewer and electric. $94 + tax, rigs to 95 ft, May 8 – Oct 17, hard-sided units only, no tents. It sits in prime grizzly habitat on the lake shore, which is why. If that's out of budget, camp in a gateway-town RV park and day-trip in — but understand you're trading away the dawn start, and the dawn start is the whole game.
When do reservations open, and how far ahead do I need to plan?
Two systems that don't talk to each other. The seven NPS campgrounds book on recreation.gov exactly six months before your stay date, rolling. The five concessioner campgrounds use the 13-month window — on the 5th of each month, that entire same month of the following year opens, online at midnight Mountain time and by phone at 7 a.m. Mammoth is first-come, first-served October 15 – April 1. The blunt version: summer Yellowstone is not a spontaneous trip if you want to sleep inside the park.
I'm flying in. Can I bring bear spray?
No. TSA prohibits it in both carry-on and checked bags, no commercially sold canister meets the FAA limit for checked self-defence sprays, and it can't be air-shipped as hazmat. Buy on arrival or rent — rentals run $16 for the first two days, $4/day after, capped at $28, with in-park pickup at Canyon Village and Old Faithful, a kiosk in baggage claim at Jackson Hole Airport, and drop-off at most villages and gateway towns. Carry it in a holster on your hip or chest, and never leave it in a hot car — it can explode above 120°F.
Can I predict when Old Faithful will erupt?
Only from the live prediction, never from a printed number — and the park's own two pages disagree on the interval. The Geyser Activity page says "94 or 68 minutes (± 10 minutes)"; the Explore Old Faithful page gives an average of ~102 minutes (± 10) with an observed range of 54–118. Both are official and NPS doesn't reconcile them. The practical read is roughly ninety minutes to two hours, predicted eruption by eruption. Get it from the free NPS app, the recorded phone line, or Geyser Times — and note predictions stop when the Visitor Education Center closes, early November to mid-December and mid-March to mid-April.
Why does Grand Prismatic look like nothing from the boardwalk?
Because you're standing beside it at ground level inside a steam cloud. Do the Grand Prismatic Overlook Trail — 1.2 miles round trip, 105 feet of climb, from the Fairy Falls lot. That's where every photograph comes from, and it wants high sun, roughly 10 a.m. to 3 p.m., not the golden hour. Do both if you can. On the spring's size, NPS again contradicts itself — the place page says 200–330 feet across and over 121 feet deep, another page says 370 feet. We print both.
Can I tent camp near the Northeast Entrance?
Not at Soda Butte, Colter or Chief Joseph — those three are hard-sided vehicles only because of grizzly activity, a restriction imposed in July 2010 after a grizzly sow with three yearlings pulled three people from their tents at Soda Butte overnight, causing serious injuries and one fatality. With Pebble Creek closed for 2026, your tent options in that corner are Slough Creek (16 in-park sites) or a campground further out on the Beartooth Highway. Sort it before you drive out there.
Can I camp for free on the Cody corridor?
Effectively no. Shoshone National Forest order SHO-23-002 prohibits dispersed camping and campfires within half a mile of either side of the US 14/16/20 centerline, from the forest boundary to the East Entrance, March 1 to December 1 annually. All camping and campfires must be in developed sites. Shoshone has also suspended reservations on that corridor, so the developed campgrounds are first-come with a 16-day limit — plan to arrive early with a backup, not to book ahead.
How bad is the driving, really?
The speed limit, not the mileage, governs your day — 45 mph park-wide and lower in developed areas, with roughly 50 miles between popular destinations on a figure-eight road system. NPS warns times run "significantly longer" for wildlife on the roadway, and a single bison herd in Hayden routinely costs 45 minutes. Add 2026 construction: up to 30 minutes park-wide for chip sealing, 15 at the Gardner River High Bridge, 10+ on Canyon–West Thumb on weekdays. Never plan a day that crosses the park twice, and never plan one that requires being somewhere at a specific hour.
Do I need a permit to day hike? And what does fishing cost?
No permit for day hiking. Backcountry overnights need one year-round: $5 per person per night plus a $10 reservation fee, with about 25% of campsites held for walk-ups up to two days out — a genuinely useful fallback. Fishing needs a Yellowstone-specific NPS permit: $40 for 3 days, $55 for 7 days, $75 for the season. State licences are not valid and not required inside the park, and the "$10 for 10 days" figures still circulating on blogs are badly out of date.
15 / WHAT WE COULD NOT CONFIRM

The honest gaps, all in one place

Every guide has these. Most don't print them. Yellowstone is unusually well documented and unusually dynamic at the same time — geysers change behaviour, roads get chip-sealed, trails erode shut, and bear management areas open and close on a calendar. Everything below was last checked in mid-July 2026. A confident wrong number costs more than an admitted gap.

Why this section exists Anyone can write a guide that sounds certain. The hard part is knowing which of your numbers are real — and in a park where the Forest Service pages return errors to automated retrieval, where two official NPS pages give different diameters for the same hot spring, and where the fire status resets on its own schedule, plenty of them need a same-week check. The null is the product. "Baker's Hole may still be hard-sided-only — call before you book a tent site" is a usable instruction that might keep someone out of a bear's way. A confident wrong fee, or a confident wrong tent permission, is not.
🔒

The printable field guide

Everything above, condensed into a print-ready PDF built for the glovebox — for a park where most of the road network has no cell signal, the campgrounds book six to thirteen months out, and the difference between a great trip and a frustrating one is what time your alarm goes off. All twelve campgrounds with 2026 fees, dates and the two booking systems; the five entrances and the pass windows; the geyser basins and the canyon; dawn positions in Lamar and Hayden; the bison, thermal and bear safety reality with the actual incident record; the gateway towns; and the honest list of what nobody could confirm — on paper that works where the signal doesn't.

All 12 campgrounds, 2026 Entrances & pass windows Geyser basins & the canyon Lamar & Hayden at dawn Bison, thermal & bear safety Gateway camping & the tent bans The departure check
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Trail Journal No. 032

Go farther. Camp lighter.
Leave it better.

Every Trekkr Trail Journal is built like this one: custom logistics, honest trail beta, the camping and access detail, and the local knowledge that turns a good trip into the one your crew talks about for years — including, always, a plain list of what we could not confirm. New destinations drop all season long, from the BC corridors to the Oregon Cascades to the Alberta badlands to the Yellowstone plateau.

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