Cyclists must observe all traffic regulations. Keep well to the right side of the road and ride in single file only. Pull off the road if four or more vehicles stack up behind you. In fog or after dark a white light in front and a red reflector on the rear of your bicycle are required. Be visible! Helmets are strongly advised. Attach a bright flag on a pole and wear light-colored clothing. Watch for falling rocks, drainage grates, and ice on road.
For safety and to ease congestion, restrictions are in effect on sections of the Going-to-the-Sun Road, from June 15 through Labor Day:
From Apgar Campground to Sprague Creek Campground bicycles are prohibited, both directions, between 11 a.m. and 4 p.m.
From Logan Creek to Logan Pass east-bound (uphill) bicycle traffic is prohibited between 11 a.m. and 4 p.m.
Start early! It takes about 45 minutes to ride from Sprague Creek to Logan Creek and about three hours from Logan Creek to Logan Pass.
Bicycle rentals are not available inside the park.
A limited number of sites at Apgar, Fish Creek, Sprague Creek, Avalanche, Many Glacier, Rising Sun, Two Medicine, and St. Mary campgrounds are held until 9:00 p.m. for bicyclists, pedestrians, and motorcyclists. Sites are shared and have a capacity of 8 people; larger groups must split up. The fee is $3.00 per person. If hiker/biker sites are full, campers must use regular unoccupied campsites.
Information provided by the National Park Service.