The loop described here is 50 miles long. There are 3600 total feet of ascent on the ride.
The route starts in Pagosa Springs and its highest elevation is about 9000 feet. It passes through a few shaded areas so you need to be aware of recent snows at that elevation. The roads are all graveled, so boggy mud is usually not a problem. Dust, however, can be aggravating along Piedra Road if there is a lot of traffic and the road is dry. Ride within a few days after a rain or in the shoulder seasons of late fall or early spring to avoid the RV/camper traffic.