About mountain biking in Adams County

Adams County, Idaho has 50 named trails tagged for mountain biking, covering 146 miles, an average of 2.9 miles each. The longest is Weiser River Trail, at 37.6 miles. 9 run 5 miles or longer.

What the mountain biking trails in Adams County are like

By length, 23 are under a mile, 18 run 1 to 5 miles, and 9 are 5 miles or longer. 1 is a loop, ending where it starts; the longest is Growler, at 11.2 miles.

Of the 48 with a difficulty rating, 8 easy, 19 moderate, and 21 hard. Of the 50 with measured elevation, Weiser River Trail climbs the most, about 9,230 ft, and 6 gain 1,000 ft or more.

All 50 mountain biking trails, longest first

Weiser River TrailMTB37.6 mi GrowlerHikeMTB11.2 mi Sheep Creek TrailHikeMTB7.5 mi Council Mountain TrailHikeMTB7.1 mi GrouseHikeMTB6.5 mi Brundage To Bear Basin TrailHikeMTB5.9 mi Goose Creek TrailHikeMTB5.7 mi Granite MountainHikeMTB5.5 mi Cold Spring TrailHikeMTB5.0 mi Six Mile CreekHikeMTB4.9 mi Bald Knob RoadMTB4.5 mi Black BearMTB3.9 mi Tarfel RoadMTB3.4 mi Granite Creek TrailHikeMTB2.6 mi Lower ElkMTB2.6 mi Upper ElkMTB2.6 mi High Jump RoadMTB2.4 mi Deseret Cabin TrailHikeMTB2.4 mi Westy TrailHikeMTB2.0 mi TemptationHikeMTB1.7 mi Grand Traverse TrailHikeMTB1.6 mi Rising Sun TrailHikeMTB1.5 mi Hidden ValleyMTB1.4 mi Boydstun LaneHikeMTB1.4 mi Goose Creek FallsHikeMTB1.2 mi Blue Ridge LoopHikeMTB1.1 mi Rising Sun Two TrackHikeMTB1.1 mi Ditch Witch TrailHikeMTB1.0 mi Baby BearMTB1.0 mi Shy Bear RoadMTB0.8 mi Baby Bear TrailHikeMTB0.8 mi Thorn CreekMTB0.7 mi WildcatMTB0.7 mi Upper Drain TrailHikeMTB0.6 mi Middle ElkMTB0.6 mi Twin Lakes TrailHikeMTB0.6 mi Roller CoasterMTB0.5 mi GreenhornMTB0.5 mi Lower Hidden ValleyMTB0.5 mi Lower Drain TrailHikeMTB0.4 mi Della's Delight TrailHikeMTB0.4 mi Mack's ConnectorHikeMTB0.4 mi West River Recreational TrailHikeMTB0.4 mi ZorroMTB0.4 mi High VoltageMTB0.4 mi To GreenhornMTB0.2 mi Payette Rim SpurHikeMTB0.2 mi To Elk TrailMTB0.2 mi Short CutHikeMTB0.2 mi Missing LinkHikeMTB0.1 mi

← All Adams 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 September 24, 2026.