Glacier National Park · Montana

Cross Glacier on Going-to-the-Sun Road

Cedar forest and the clear water of Lake McDonald give way to Logan Pass tundra, then the road descends beside St. Mary Lake into the park’s drier east side.

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Three landscapes, one continental divide

Lake McDonald, Logan Pass, and the east-side valleys

Glacier changes from cedar forest and broad western lakes to alpine tundra and the drier grasslands around St. Mary. Going-to-the-Sun Road links those landscapes when the alpine section is open.

Going-to-the-Sun RoadLake McDonald, Logan Pass, St. Mary Lake, road conditions, and the 2026 shuttle system.Hikes, lakes, and valleysCompare Many Glacier, Two Medicine, Avalanche Lake, the North Fork, and ranger-led activities.Choose a park sideWest Glacier, Whitefish, St. Mary, and Many Glacier put different trailheads within reach.Entrances and transportationAirports, Amtrak, entrance roads, current access rules, parking, and shuttle tickets.

Glacier is not one simple loop. The Continental Divide separates the west-side lakes from St. Mary, Many Glacier, and Two Medicine.

Road systems differ

Going-to-the-Sun Road, Logan Pass, Many Glacier, and Two Medicine each have different seasons, crowds, and backup needs.

Choose a gateway

West Glacier, Apgar, St. Mary, Many Glacier, Whitefish, and Kalispell create very different first mornings.

Use cool mornings

Cool mornings are useful for trailhead parking, exposed hikes, and wildlife viewing; afternoon storms and heat are more common in summer.

Keep a lower-elevation option

When weather closes the high country, Lake McDonald, Polebridge, a gateway meal, or a lower-elevation walk can replace the Logan Pass portion of the day.

The Glacier shape

From Lake McDonald cedar forest to St. Mary grasslands

Going-to-the-Sun Road crosses the park between Lake McDonald and St. Mary. Many Glacier and Two Medicine branch into separate east-side valleys, while Polebridge and Bowman Lake require a North Fork day. One of those areas is enough for a second full day.