About mountain biking in San Juan County

San Juan County, Colorado has 28 named trails tagged for mountain biking, covering 102 miles, an average of 3.6 miles each. The longest is Continental Divide NST, at 14.8 miles. 5 run 5 miles or longer.

What the mountain biking trails in San Juan County are like

By length, 7 are under a mile, 16 run 1 to 5 miles, and 5 are 5 miles or longer.

Of the 27 with a difficulty rating, 4 easy and 23 moderate. Of the 28 with measured elevation, Continental Divide NST climbs the most, about 4,350 ft, and 13 gain 1,000 ft or more.

All 28 mountain biking trails, longest first

Continental Divide NSTHikeMTB14.8 mi Twin Sisters / Colorado TrailHikeMTB10.0 mi Engineer Mountain TrailHikeMTB9.7 mi Cascade Creek TrailHikeMTB8.2 mi Boulder Gulch TrailHikeMTB5.5 mi Columbine LakeHikeMTB5.0 mi Rico-Silverton TrailHikeMTB4.7 mi South Fork TrailHikeMTB4.6 mi Deer Creek TrailHikeMTB4.6 mi County Road 23 (Maggie Gulch Road)HikeMTB4.1 mi Engine Creek TrailHikeMTB3.3 mi Coal Creek TrailHikeMTB2.9 mi White Creek TrailHikeMTB2.9 mi West Lime Creek TrailHikeMTB2.5 mi Pass TrailHikeMTB2.5 mi Rico-Silverton - Co.Trail TrailHikeMTB2.4 mi Colorado Trail (Segment 25)HikeMTB2.3 mi Middle Pole TrailHikeMTB2.3 mi Graysill TrailHikeMTB2.1 mi Rico - Silverton TrailHikeMTB1.7 mi OutbackHikeMTB1.6 mi West Fork Pole CreekHikeMTB0.9 mi Cascade Creek RoadHikeMTB0.8 mi Colorado TrailHikeMTB0.7 mi Poughkeepsie Gulch BypassHikeMTB0.6 mi Tin Can BasinHikeMTB0.5 mi Molas - Co.TrailHikeMTB0.1 mi Columbine Lake TrailHikeMTB0.1 mi

← All San Juan County trails

Trail geometry from OpenStreetMap contributors, licensed ODbL. Elevation from the USGS 3D Elevation Program. Compiled and published by Trailmonger · trail data last rebuilt October 4, 2026.