Ptarmigan Lake
What to Expect
Safety Advisory
This is prime grizzly bear country. Carry bear spray accessible on your hip — not buried in your pack — and make noise consistently, especially through the forested sections where sight lines are limited.
Snow can linger on the upper trail well into July, making route-finding tricky and creating slippery traverses on exposed slopes. Traction devices are worth the weight if you're hiking before mid-July.
The trail is fully exposed above treeline with no shelter. Afternoon thunderstorms are common from mid-July through August — check the forecast and plan to be heading down by early afternoon.
Trail Details
- 1
Arrive at the Iceberg Ptarmigan Trailhead before 7:30 AM in peak season — the Many Glacier lot fills completely by mid-morning, and the park shuttle can add an hour to your start.
- 2
The junction with the Iceberg Lake trail comes about 2.5 miles in and is easy to miss if you're chatting. Watch for the signed split and bear right toward Ptarmigan — going left sends you to the considerably more crowded Iceberg Lake.
- 3
The lake's cirque walls catch morning light beautifully, so time your arrival for mid-morning if you're carrying a camera. The turquoise water photographs best when the sun is high enough to illuminate the glacial flour but before harsh midday shadows dominate the cliffs.