The Alpine Loop is generally considered to begin and end at Lake City. From there the route commonly followed is west over Cinnamon Pass or Engineer Pass to Animas Forks, and then returning east back to Lake City. The clockwise circuit starting with Cinnamon Pass generally puts the vehicle on the inside "lane" of the mountainous portions with the driver on the outside, providing a better view of the relative position of the vehicle and the outer edge of the road at the top of the drop-off.
[3] The counter-clockwise direction is preferable for less powerful 4-wheel drive vehicles that may have a difficult time ascending steep sections on the western portion of Engineer Pass.
Major intersections
This section is missing mileposts for junctions. Please help by adding them.
^"Alpine Loop". America's Scenic Byways. Retrieved April 3, 2022.
^"The Alpine Loop"(PDF). United States Department of the Interior Bureau of Land Management. Archived from the original(PDF) on 11 June 2014. Retrieved 1 February 2015.