About this permit
Many Glacier's backcountry is sold through Glacier National Park's single wilderness permit on Recreation.gov, which covers 65 designated campgrounds parkwide. The district holds thirteen of them: Cosley Lake, Cracker Lake, Elizabeth Lake Foot, Elizabeth Lake Head, Gable Creek, Glenns Lake Foot, Glenns Lake Head, Helen Lake, Many Glacier, Mokowanis Junction, Mokowanis Lake, Poia Lake and Slide Lake.
The capacity rules are unusual and worth reading twice. The park says the maximum party size allowed is 12, each wilderness campground has 2 to 7 campsites, and each campsite is limited to four people. Glacier has no group campsites. What it has instead is five large-group advance reservations issued per year for parties of 9 to 12, awarded by their own single-day lottery, after which large groups can only get permits on a walk-up basis the day before or the day of. At-large camping in the Nyack/Coal Creek zone is capped at six campers from May 1 to October 31.
Costs are $10 for the permit plus $7 per person per night from May 1 to October 31; winter permits from November 1 to April 30 are free. The lottery application fee is a separate, non-refundable $10.
The 2026 calendar ran in two single-day windows: the large group lottery on March 1 (winners notified March 3, application due March 10) and the standard group lottery for parties of 1 to 8 on March 15, for one of 3,000 advance reservations, with notification March 17 and a booking window from March 21 to April 30. Everything unclaimed went on general sale May 1 at 8:00 am MT and stayed available through September 30. From October 1 to October 31 permits are in-person, first-come, first-served only. Advance reservations are capped at 16 miles per day.
Walk-ups are a real strategy here, not a fallback: the park says about 30% of all sites parkwide are set aside for walk-up campers, with about 70% of wilderness campsites parkwide available for advance reservations. That is a share of SITES, not of permits.
One piece of 2026 context worth checking before you go. The Swiftcurrent water-system construction that closed the area was a 2025 project and the park states construction is completed and not anticipated in the Many Glacier area in 2026. But a June 2026 flood closed all trails in the Many Glacier Valley until further notice, so call the Many Glacier Ranger Station before you rely on any specific trail.
The route
The park publishes one-way distances and gains from the Many Glacier trailheads: Cracker Lake 6.4 miles and 1,400 feet; Poia Lake 6.4 miles and 2,400 feet; Iceberg Lake 4.8 and 1,200; Ptarmigan Lake 4.3 and 1,700; Ptarmigan Tunnel 5.3 and 2,300, with the tunnel doors generally open mid-July to late September; Grinnell Glacier Viewpoint 5.3 and 1,600; Swiftcurrent Pass 6.8 and 2,300.
The thirteen wilderness campgrounds in the district are Cosley Lake, Cracker Lake, Elizabeth Lake Foot, Elizabeth Lake Head, Gable Creek, Glenns Lake Foot, Glenns Lake Head, Helen Lake, Many Glacier, Mokowanis Junction, Mokowanis Lake, Poia Lake and Slide Lake. All but Many Glacier itself are flagged no campfires.
Why it matters
Many Glacier is the densest concentration of good backcountry camping in Glacier National Park. From one trailhead you can reach Cracker Lake under Mount Siyeh, walk Ptarmigan Tunnel into the Belly River, or link Elizabeth and Glenns Lakes on the way to the Canadian border.