Alpine Loop Backcountry Byway

The Alpine Loop Backcountry Byway is a 65-mile network of historic mining roads connecting Lake City, Ouray, and Silverton through the San Juan Mountains at elevations above 12,000 feet, managed by the BLM Gunnison Field Office. The route crosses Engineer Pass (13,218 ft) and Cinnamon Pass (12,620 ft) on narrow, rocky mountain tracks with significant exposure. High-clearance 4WD is required at minimum; experience with mountain driving and a recovery kit are strongly recommended. Jeeps, 4x4 trucks, and side-by-sides are the predominant vehicles; ATVs are permitted on designated segments. No fee or permit is required; dispersed BLM camping is available at multiple pullouts along the route. One of the most celebrated 4WD destinations in the lower 48, drawing tens of thousands of vehicles each short summer season.