St Mary Lake

St Mary Lake is a 20-mile out-and-back foot trail in Glacier National Park, Montana. It climbs 969 ft to a high point of 4,834 ft. Difficulty: strenuous, from the NPS hiking-rating formula.

St Mary Lake, Glacier National Park
Photo: Spenceregan7 · CC BY 3.0 · Wikimedia Commons

Plan this hike

Open St Mary Lake on Trailbound's interactive map to see the full route, the elevation profile, today's forecast and any park alerts for Glacier. Glacier has permits or reservations for some areas: see the Glacier page for what's needed.

More trails in Glacier

All 173 trails in Glacier National Park