Iceberg Lake

Overview

Iceberg Lake sits in a dramatic, steep-walled cirque that makes the payoff feel cinematic: turquoise water ringed by towering cliffs, with chunks of ice often lingering well into summer. It’s one of the Many Glacier area’s marquee day hikes for good reason.

The Hike

The trail starts in Many Glacier behind Swiftcurrent Motor Inn and initially shares the path toward Ptarmigan Tunnel before branching to the lake. Expect an out-and-back of just under 10 miles with roughly 1,200 feet of gain. The first bit climbs, then the grade eases into a mostly gentle ascent—long, but very manageable if you pace it.

What You’ll See

As you approach the basin, small pools and snow patches give way to the lake’s turquoise surface and sheer headwall. On many summer days, real icebergs float near the shore—a rare sight that makes photos here pop. The return hike opens big views back toward the Many Glacier valley.

Wildlife

This is prime habitat for big mammals. Moose sightings are not uncommon near the lake and along the trail. Both grizzly and black bears use this corridor; closures can happen and you should hike with bear spray readily accessible and follow standard bear safety.

Planning & Trail Conditions

This is a very popular route; parking around Swiftcurrent fills early and the trail can feel busy in peak season. There are no services on the trail or at the lake—bring water, food, and everything you need. Expect lingering snow, chilly wind, and cold temps at the lake even in midsummer; layers matter. Bugs can be pesky in summer—pack repellent.

Best Time to Visit

Start early on clear days for easier parking, fewer people at the lake, and softer morning light on the cirque walls. Early season can look wintry (frozen surface or sparse icebergs), while mid-to-late summer typically offers the classic turquoise water with floating ice. Always check current conditions and any wildlife-related closures before heading out.