The lower elevation sections of Going-to-the-Sun Road remain open all year and provide access to many locations and activities. The summer opening date of the alpine portion varies from year to year, based on snowfall and plowing progress. There is no set date for the road to open over Logan Pass. Typically, the road has been fully open by early July.
To help you plan, check out past opening and closing dates. (60 KB pdf)
Plowing Going-to-the-Sun Road is a monumental challenge each year. Unpredictable spring snowstorms, avalanches, or other weather-related events can slow down progress. It’s common for work crews to need to re-plow sections of park roads when weather events happen. Safety for plowing crews, contractors, and the public is our utmost concern and priority. These unknown factors make predicting the precise opening date of Going-to-the-Sun Road impossible.
Vehicle Size Restrictions
Vehicles and vehicle combinations longer than 21 feet (including bumpers) or wider than 8 feet (including mirrors), are prohibited between Avalanche Creek and Rising Sun. Vehicles over 10 feet in height may have difficulty driving west from Logan Pass to the Loop, due to rock overhangs. Stock trucks and trailers can access Packers Roost from the west and Siyeh Bend from the east.
From June 15 through Labor Day, the following sections of the Going-to-the-Sun Road are closed to bicycle use between 11 am and 4 pm:
Due to ongoing road rehabilitation on Going-to-the-Sun Road, portions of the roadbed may not be paved. Bicyclists should use extreme caution riding on gravel portions.
For safety reasons, the speed limit is 40 mph on the lower elevations of the road and 25 mph on the alpine section. Be very careful around blind curves, as animals and pedestrians often cross the road unexpectedly.
By the Numbers
Glacier National Park is wild country, and wildlife may be present anywhere along the road. Mountain goats and bighorn sheep are consistently seen near Logan Pass. Grizzly bears are often seen near Two Dog Flats on the east side.
There are transportation options if you prefer to leave the driving to someone else. Visit the Getting Around page for more information.
There are also incredibly scenic sections of the park not found along Going-to-the-Sun Road. Check out the Places to Go page for information on all entrances and districts.
Last updated: April 21, 2023