Glacier National Park · Montana
St. Mary Campground — how to get a site when it's sold out
Overview St. Mary Campground is the largest campground on the east side of Glacier National Park, and is conveniently located approximately a half-mile from the St. Mary Visitor Center.
Booking St. Mary Campground
Sites at St. Mary Campground are reserved through Recreation.gov. Sites here can be reserved in advance through the official system, and they are claimed fast — cancellations then trickle back all season, unannounced, at any hour of the day or night.
Site facts
| Total sites | 157 |
|---|---|
| Site types | Standard, Tent only, Group |
| Location | West Glacier, MT |
| Book through | Recreation.gov |
| Official listing | Recreation.gov |
The cancellation play at St. Mary Campground
Because sites are booked months ahead, a steady share of reservations get cancelled as trips fall through. Each cancellation instantly returns that site and those nights to the official calendar — first-come, first-served, no waitlist, no announcement. Refreshing the booking page yourself, every few minutes for weeks, works in theory. In practice, the people who get these sites are the ones who hear about the opening first.
ItOpened scans the Recreation.gov calendar for St. Mary Campground around the clock. When a site matching your dates and your vehicle opens, you get a text with a direct link to it. You book it yourself, in your own account, at the normal price. We never book, hold, or resell — your fee pays for monitoring, and openings are first-come, so speed is the whole game.
Other campgrounds in Glacier National Park
| Apgar Campground | Cancellation alerts available |
|---|---|
| Fish Creek Campground | Cancellation alerts available |
| Many Glacier Campground | Cancellation alerts available |
| Two Medicine Campground | Cancellation alerts available |
| Avalanche Campground | Cancellation alerts available |
| Rising Sun Campground | Cancellation alerts available |
| Sprague Creek Campground | Cancellation alerts available |
| Apgar Group Sites | Cancellation alerts available |
Page data refreshed 2026-10-29. Site facts come from the official directory listing for St. Mary Campground; cancellation statistics come from our own scanning logs.