The St Regis River begins at Lookout Pass in which mountain pass on the Idaho/Montana border?
Lookout Pass Lookout Pass is a mountain pass in the Rocky Mountains of the northwestern United States. In the Coeur d'Alene Mountains of the Bitterroot Range, the pass is on the border between Idaho and Montana, traversed by Interstate 90 (formerly U.S. Route 10) at an elevation of 4710 ft above sea level.
Buchanan Pass Buchanan Pass, elevation 11844 ft , is a mountain pass located in the Rocky Mountains of north-central Colorado in the United States. The pass is toward the northern end of the Indian Peaks of the Front Range on the Grand-Boulder county line, between the Buchanan Creek drainage to the west and the Middle St. Vrain Creek drainage to the east. It is traversed by the Buchanan Pass Trail which travels from its junction with the Cascade Creek Trail on the west to the Camp Dick campground on the east, close to Peaceful Valley. The pass is in the Indian Peaks Wilderness of the Arapaho and Roosevelt National Forests and is the eastern-most mountain pass on the continental divide.