How to Get a Campsite at Yellowstone in 2026 (Even When It's Sold Out)

Updated August 2026 · 9 min read

America's first national park books through five recreation.gov campgrounds that Camp.land watches: Mammoth, Indian Creek, Lewis Lake, Slough Creek, and Tower Fall — 277 sites total, all standard no-hookup. Summer dates, especially July and August, sell out within minutes of releasing. If you miss it, cancellations happen constantly as other travelers change plans, and those released sites post back to recreation.gov in real time. Camp.land watches all five around the clock and emails you the moment a site opens.

Here is how booking actually works, what each campground looks like, and what to do if everything is sold out for your dates.

How Booking Works for Yellowstone Campgrounds

The five recreation.gov campgrounds run on the standard rolling 6-month booking window: every morning at 10 a.m. Eastern, a new date exactly six months out unlocks for booking. Mark that time, not midnight or "whenever" — a lot of would-be campers miss the window simply because they show up hours late.

What you are choosing between:

• Mammoth — 81 sites (64 standard + 17 tent-only) at Mammoth Hot Springs, near the North Entrance and its famous elk-ruled lawns.
• Indian Creek — 68 standard no-hookup sites, also on the north side, quieter than Mammoth.
• Lewis Lake — 81 standard no-hookup sites near the South Entrance, a short drive from Grant Village and the south shore of Yellowstone Lake.
• Slough Creek — just 16 standard sites in the Lamar Valley area, the park's wolf- and bison-watching heartland. The hardest ticket of the five.
• Tower Fall — 31 standard sites near Tower-Roosevelt.

There are no hookups anywhere in these five. Nights are cool even in July at Yellowstone's elevation, so pack layers regardless of forecast.

The Sold-Out Play

With 277 sites serving the country's most-visited national park, summer sells through fast. But cancellations happen just as constantly — plans change, and released sites go straight back into the recreation.gov system.

Recreation.gov's own cancellation policy is why: cancelling more than 14 days before arrival costs a flat $10 fee, with the rest refunded in full. That low, flat penalty means a lot of campers who are on the fence cancel early rather than risk losing a full night's fee later. The upshot is a steady trickle of openings in the weeks and months before a date — which is exactly why watching the listings yourself, by hand, misses most of them.

The play: try for the 10 a.m. Eastern release six months out first. If you miss it, set a Camp.land alert on the campground you want for your exact dates — we watch recreation.gov continuously and email you the instant a site opens up, whether that is a fresh release or a last-minute cancellation. You do not have to sit there refreshing recreation.gov for weeks — we do that part.

Best Time to Book

July and August are peak season and the hardest stretch to land a site, especially Slough Creek's 16 sites. September brings elk rut, thinner crowds, and far easier booking. The North Entrance roads stay open year-round, so shoulder-season trips to Mammoth and Indian Creek are the realistic fallback for spontaneous travelers.

The gateway towns have lodging if the campgrounds do not come through: vacation rentals and cabins around the parks book on Vrbo, and we link the search rather than quote numbers since inventory changes constantly.