Ancient glaciers carved this Montana wilderness of turquoise lakes, wildflower meadows, and jagged peaks.
Mid-July–mid-September: Going-to-the-Sun Road is fully open, high trails are snow-free and wildflowers peak.
July–August is very busy; vehicle reservations or timed entry have applied on parts of Going-to-the-Sun Road, so check current rules. Go early or late in the day.
Snow can linger on high trails into July and return in September. Wildfire smoke is common in August, and the Going-to-the-Sun Road closes for winter.
General patterns — conditions vary by year. Check current NPS alerts and road status before you go.
Distances are rough estimates to the closest entrance. Check road and ferry conditions before you go.
Campgrounds inside the park are booked through Recreation.gov, and many fill months ahead.
FIND CAMPSITES ON RECREATION.GOV ↗