Avalanche Lake
Mossy rocks line a narrow, turquoise stream plunging over a small waterfall through a dense pine forest in Glacier National Park.
Avalanche Lake within Glacier National Park overlooks rugged cliffs, dense pine forest, and a bright blue sky.
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Avalanche Lake

Natural Attr★★★★☆
Last Updated: December 2025

Overview

About This Attraction

Avalanche Lake forms a cirque carved by ancient glaciers. Meltwater from Sperry Glacier feeds its turquoise waters, which reach up to 63 feet deep. The lake measures roughly 0.6 miles in length and sits near 3,905 feet elevation. Access is a 4.6–6 mile round-trip from Trail of the Cedars; parking is limited. Be bear-aware and plan ahead for crowds and possible rockfall along the surrounding cliffs.

Best Time to Visit

Late June through September; photograph with morning light and watch for Going-to-the-Sun Road openings mid-July.

Visitor Tips

  • Arrive before 8am in peak season; parking fills quickly at Trail of the Cedars.
  • Start from the Trail of the Cedars trailhead; round-trip is about 6.0 miles.
  • Bear spray and sturdy boots are essential; download offline maps because cell service is spotty.
  • Stay on the trail; the lake sits behind steep cliffs with slippery roots and rocks when wet.