Guides.

Alpine Loop – Colorado Overland Route

The Alpine Loop Backway is a 65-mile mountain loop in the San Juan Mountains of southwestern Colorado, connecting the historic mining towns of Lake City, Silverton, and Ouray. The route is designated a Bureau of Land Management Backcountry Byway and crosses lands managed by both BLM and San Juan National Forest. Two high passes — Engineer Pass at 12,800 feet and Cinnamon Pass at 12,640 feet — make it one of the highest sustained 4WD routes in the lower 48.