The Alpine Loop crosses two high passes that need a real 4x4

The Alpine Loop Backcountry Byway is one of the main ways to travel between Lake City, Silverton, and Ouray, but it is not a casual drive. The Bureau of Land Management calls it a rugged 4x4 road system, and it crosses two high passes: Cinnamon Pass and Engineer Pass, climbing to roughly 12,800 feet.

The lower paved and graded sections near Lake City can suit a careful driver in a standard car. The passes themselves are different. They are rocky, narrow, and steep, and crossing them needs a high-clearance, four-wheel-drive vehicle. A regular car, van, or low truck can be damaged or stranded.

Snow blocks the passes for much of the year. They usually open only in summer and can close again early, so the season is short. Storms, rockfall, and afternoon lightning are all part of the high country here.

Plan as if you are on your own, because you nearly are. The BLM notes that cell and wireless service does not work in most places along the route. Download maps ahead of time, carry water, food, and warm layers, and tell someone your route and return time.

For the current map, pass conditions, and travel tips, start with the BLM’s Alpine Loop page and printed byway guide before you go.