Mammoth Campground sits in a high sagebrush steppe scattered with juniper and Douglas fir, five miles from the park's North Entrance at Gardiner, Montana. The Mammoth Hot Springs terraces and their boardwalks are right next door, and elk, bison, pronghorn, and mule deer move through this part of the park depending on the season. It opens in mid-April, earlier than most campgrounds in the park, and flush toilets run year-round.
Check this campground’s official reservation page for its current release schedule and seasonal openings. We have not verified a booking window for this campground.
We check Recreation.gov right now — no stale numbers, just what’s actually open.
Find a cabin near Mammoth Campground — Yellowstone National Park
Gardiner, just outside the North Entrance, has cabins and vacation rentals worth checking if Mammoth is full.
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64 sites
17 sites
Summer books out first, but Mammoth's mid-April opening makes it the shoulder-season pick when the rest of the park's campgrounds are still closed.
Yes — Mammoth Campground — Yellowstone National Park is a federal campground booked through recreation.gov, and its sites fill up on weekends and during peak seasons. Summer books out first, but Mammoth's mid-April opening makes it the shoulder-season pick when the rest of the park's campgrounds are still closed. Reserve early on recreation.gov, and set a Camp.land alert to catch cancellations the moment they open.
Mammoth Campground — Yellowstone National Park has 81 campsites, including Standard (no hookups), Tent only.
Check this campground’s official reservation page for its current release schedule and seasonal openings. We have not verified a booking window for this campground.
Mammoth Campground — Yellowstone National Park occasionally has same-day or cancellation openings on recreation.gov, especially midweek. Camp.land watches Mammoth Campground — Yellowstone National Park for cancellations and emails you the instant one opens, with a direct booking link.
Your first alert is free — no card required. We’ll email you the moment a site opens.
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