Glacier National Park: Going-to-the-Sun Road (West Glacier to Saint Mary) is a 48.7 mile point-to-point scenic drive located near Essex, Montana that features mountains, lakes, spectacular views and wildlife.
Going-to-the-Sun Road in Montana's Glacier National Park spans 50 miles through the park's wild interior, winding around mountainsides and treating visitors to some of the best sights in northwest Montana and the whole US.
Going to the Sun detailed FAQS: http://www.nps.gov/glac/planyourvisit/gttsrfaq.htm
Going to the Sun Road in Glacier National Park is in the northwest corner of Montana along the spine of the Rocky Mountains.
West Entrance Near Kalispell, Whitefish, and Columbia Falls, the West Entrance accesses the Lake McDonald area, Park Headquarters, the Apgar Visitor Center and the west entry point to the Going-to-the-Sun-Road. From Kalispell, take Highway 2 north to West Glacier (approximately 33 miles).
Ample parking along the route, with major parking near Lake McDonald, Logan's Pass VC, and St. Mary VC.
Also camping, lodging, etc.
Detailed info here: http://www.nps.gov/glac/planyourvisit/hours.htm
Glacier National Park
PO Box 128
West Glacier, MT 59936
Visitor Information (406) 888-7800