About mountain biking in Custer County

Custer County, Idaho has 49 named trails tagged for mountain biking, covering 123 miles, an average of 2.5 miles each. The longest is East Fork Valley, at 11.5 miles. 8 run 5 miles or longer.

What the mountain biking trails in Custer County are like

By length, 23 are under a mile, 18 run 1 to 5 miles, and 8 are 5 miles or longer.

Every one carries a difficulty rating: 9 easy, 31 moderate, and 9 hard. Of the 49 with measured elevation, East Fork Valley climbs the most, about 2,910 ft, and 9 gain 1,000 ft or more.

All 49 mountain biking trails, longest first

East Fork ValleyHikeMTB11.5 mi Hay-Knapp CreekHikeMTB10.5 mi Redfish-Stanley TrailMTB9.5 mi Williams Creek TrailHikeMTB9.3 mi Sunday CreekHikeMTB8.2 mi Twin CreekHikeMTB6.8 mi Hell Roaring TrailHikeMTB5.1 mi Dry Creek RoadMTB5.0 mi Estes Mtn TrailHikeMTB5.0 mi Elk Meadow-Park CreekHikeMTB4.7 mi Elk MountainHikeMTB3.7 mi Redfish RidgeHikeMTB3.1 mi Kinnikinic CreekHikeMTB2.9 mi Little Basin CreekHikeMTB2.6 mi Boundary CreekHikeMTB2.5 mi National Forest Development Road 053HikeMTB2.4 mi Washington PeakHikeMTB2.3 mi Little Basin CutoffHikeMTB2.2 mi John HenryHikeMTB2.1 mi Upper GrandHikeMTB2.0 mi Trail 616HikeMTB1.9 mi Kelly Creek RoadMTB1.7 mi Ebb And FlowHikeMTB1.7 mi Upper Hell Roaring TrailHikeMTB1.6 mi PigtailHikeMTB1.5 mi Marshall Lake CutoffHikeMTB1.2 mi Rattlesnake AlleyHikeMTB1.0 mi Golf Course LoopHikeMTB1.0 mi Lower Blue ViewHikeMTB0.9 mi Stanley Creek RoadMTB0.8 mi Upper Blue ViewHikeMTB0.7 mi Stanley Lake Inlet TrailHikeMTB0.7 mi Joy Ride AHikeMTB0.7 mi Rocky RoadHikeMTB0.7 mi Lower GrandHikeMTB0.7 mi Lower BuzzardHikeMTB0.6 mi Skull ValleyHikeMTB0.6 mi ValleyHikeMTB0.6 mi OverlookHikeMTB0.4 mi MahoganyHikeMTB0.4 mi Upper BuzzardHikeMTB0.4 mi ChukarHikeMTB0.3 mi Kid's ReconnectHikeMTB0.3 mi Shark's ToothHikeMTB0.3 mi Joy Ride BHikeMTB0.2 mi Elk CreekHikeMTB0.2 mi RumbleHikeMTB0.2 mi Redfish Outlet ConnectorHikeMTB0.2 mi BridgeHikeMTB0.2 mi

← All Custer 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 25, 2026.