June 30, 2014
The only reason it gets 3 stars is it's a jeep road. So you'll pass jeeps. But as one lady expressed to me, they'll be shocked to see you out "risking your life". My plan for the day was to hike one of the 14ers along the Cinnamon Pass rd. So I hired a shuttle to take me up to the American Basin Trailhead with my bike. I hiked my 14er and biked down to Lake City from American Basin. I guess it's about 20 miles, with pretty much no climbing, lots of downhill. It's doubletrack, but there's about a mile stretch with a serious cliff and no guardrail - it's a jeep road after all. The road has some good rocks in it so you bump around pretty good. The view is amazing, even if you don't hike one of the 3 14ers with trailheads along the route. In the winter and spring there's great backcountry skiing in American Basin - maybe if you have a fat tire bike? It's mostly a view thing though, not a single track experience. If you want singletrack in the area, check out the Camp Trail up the Continental Divide and the Continental Divide Trail itself.
Closest I can think of is the doubletrack part of the 401 in Crested Butte.