Northwest of Crested Butte, the Loop Loop is a locals favorite after work ride. From town, the main loop is a 10 mile mountain bike ride, with plenty of side routes for variations to keep it interesting.
To reach the main trailhead parking area from SR135, head west on Elk Avenue to First Street. Turn right heading north on First Street for 4 blocks to Butte Avenue. Turn left heading west on Butte Avenue. Butte Avenue eventually turns to the dirt and becomes Peanut Lake Road. The parking area is just ahead on the left.
Overall, Lower Loop Trail is the 67th most popular mountain bike trail of all 175 mountain biking rides in Colorado.