ItOpened Guides · Glacier National Park
How to actually get a site at St. Mary Campground — the verified facts, the release reality, and the cancellation route in.
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. The visitor center offers interpretive programs, shuttle service and Red Bus tours leaving from the center. The campground sits near the entrance of the popular scenic byway, the Going-to-the-Sun Road. Beginning August 17th through September 11th, St.
| Total sites | 157 |
|---|---|
| Site types | Standard, Tent only, Group |
| Site mix (directory count) | Standard 124 · Tent only 14 · Group 1 |
| Area | Glacier National Park |
| Managed by | National Park Service |
| Nearest community | West Glacier, MT |
| Activities | Camping, Day Use Area, Fishing, Hiking, Interpretive Programs |
| Directory phone | 406-732-7708 |
| Official listing | Recreation.gov campground page |
| Book through | Recreation.gov |
St. Mary Campground is reserved through Recreation.gov, on the release pattern stated in its official listing. In demand, reservable sites are claimed within minutes of each release — which is why the campground reads as sold out for most of the year, and why the realistic route in is rarely the release itself.
Sites booked months ahead get cancelled as trips fall through, and each cancellation returns its nights to the official calendar instantly — first-come, no waitlist, no announcement. ItOpened scans the Recreation.gov calendar for St. Mary Campground around the clock; when a site matching your dates and vehicle opens, you get a text with a direct link, and you book it yourself, in your own account, at the normal price. We never book, hold, or resell. The mechanics are the same ones documented in how campsite cancellations actually work.
Watch more than one calendar. These nearby or same-area campgrounds take the same trip — and their cancellations are independent chances:
| Apgar Campground | 211 sites · same area |
|---|---|
| Fish Creek Campground | 189 sites · same area |
| Many Glacier Campground | 111 sites · same area |
| Two Medicine Campground | 105 sites · same area |
| Avalanche Campground | 91 sites · same area |
Full directory facts and sibling campgrounds: St. Mary Campground campground page · Glacier National Park park page.
Every figure in this article traces to one of the sources above. If a number isn't sourced, we don't print it.
Last updated 2026-10-30.