Lake McDonald
Colorful smooth lakebed pebbles under clear water reflect a forested shore and towering mountain in Glacier National Park.
Sunset over Lake McDonald in Glacier National Park, calm water reflecting a fall forest and distant mountains.
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Lake McDonald

Natural Attr★★★★☆
Last Updated: January 2026

Overview

About This Attraction

Turquoise water mirrors the pine-fringed shoreline along a broad, glassy basin. This is a glacial lake formed by late-Pleistocene ice that left a U-shaped valley filled with meltwater. The water stays crystal-clear to the bottom, thanks to the cold depths and minimal plankton. The Going-to-the-Sun Road runs along the southern edge, offering easy roadside access to the lake's expanse.

Best Time to Visit

Late June through early September is the warm-season window with full access to lake activities around Lake McDonald. May–early June and September–early October are quieter and milder. Sunsets over the lake create strong reflections; the morning and late-afternoon light makes the pebble colors pop—red and maroon tones from iron-rich grains and blue-green hues from deeper, less oxidized water. Midday glare can be intense, and July and August are the busiest months.

Visitor Tips

  • Parking fills by early morning—use Apgar Village lots or pull-offs along Going-to-the-Sun Road.
  • Bear spray is essential in Glacier National Park; carry and know how to use it.
  • Kayak or canoe access is common; bring your own craft or rent nearby.
  • Dawn and dusk offer the best wildlife viewing along the lakeshore.
  • Dress for cold water even in summer; water is frigid.
ℹ️ Data Sources

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