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.
Summit Pass Summit Pass (el. 1305 m ) is a high mountain pass in the Northern Canadian Rockies in the province of British Columbia. It is one of two passes the Alaska Highway utilizes to cut westwards across ranges of the Rocky Mountain System; further north is the lower Muncho Pass.