About this permit
Glacier National Park sells one wilderness permit that covers backcountry camping across the entire park, from the North Fork to Two Medicine. You build an itinerary out of designated campgrounds, one night at each, and the permit ties them into a legal route. About 3,000 standard advance reservations are released each spring through a March request period on Recreation.gov, with roughly 30 percent of all sites held back for walk-up permits issued the day before or day of your trip.
Because the advance reservations for the well-known routes sell out within days, catching a cancellation on permit 4675321 is the practical way to land the dates and campsites you want once the initial release is gone.
The route
Glacier's wilderness permit is a build-your-own-route system. You pick a chain of designated campgrounds, one per night, and the permit ties them together into a legal itinerary. Popular strings include the Highline to Granite Park traverse along the Garden Wall, the Gunsight Pass route past Gunsight and Lake Ellen Wilson, the Dawson-Pitamakan loop out of Two Medicine, and the long walk north from Many Glacier over Stoney Indian Pass to Goat Haunt. The nine booking districts (Goat Haunt, Lake McDonald, Many Glacier, North Fork, St. Mary, Two Medicine, Walton, the Undesignated Zone, and the Continental Divide Trail corridor) each cover a cluster of campgrounds, and a single trip can cross several of them.
Most routes gain and lose thousands of feet crossing named passes above 7,000 feet. Snow lingers on north-facing passes into July, and the high sites often do not open until mid-July. By late September the season closes down as campgrounds shut for winter.
Why it matters
This is the whole-park wilderness permit for Glacier, not a single trail. Every backcountry night in the park runs through Recreation.gov permit 4675321, whether you are stringing together the Northern Loop from Goat Haunt, camping under Grinnell Glacier out of Many Glacier, or walking the Continental Divide Trail through the park. Advance reservations move in a March request period and roughly 3,000 standard reservations sell out fast, so the routes people actually want fill months ahead. Catching a cancellation on this permit is often the only way to get the campsites and dates you planned around.
The feeling
You wake to a windless morning at a lakeside campsite, the peaks across the water still holding last night's snow. The bear cables sag with your food bag ten feet up. There is no cell signal, no road noise, just the sound of a creek and the knowledge that the nearest trailhead is a full day behind you. Glacier's backcountry does not feel visited. It feels earned.