About mountain biking in Los Alamos County

Los Alamos County, New Mexico has 40 named trails tagged for mountain biking, covering 105 miles, an average of 2.6 miles each. The longest is Quemazon/Pipeline Loop, at 15.0 miles. 5 run 5 miles or longer.

What the mountain biking trails in Los Alamos County are like

By length, 20 are under a mile, 15 run 1 to 5 miles, and 5 are 5 miles or longer. 2 are loops, ending where they start; the longest is Old Road North Fork Trail, at 2.1 miles.

Every one carries a difficulty rating: 15 easy, 16 moderate, and 9 hard. Of the 40 with measured elevation, Quemazon/Pipeline Loop climbs the most, about 1,923 ft, and 5 gain 1,000 ft or more.

All 40 mountain biking trails, longest first

Quemazon/Pipeline LoopMTB15.0 mi Canyon Rim TrailHikeMTB14.9 mi Knife Edge TrailHikeMTB11.0 mi Ruin Mesa TrailHikeMTB9.8 mi Bayo Benches LoopMTB7.7 mi Perimeter Trail (290)HikeMTB4.3 mi Kwage Mesa LoopMTB4.0 mi Quemazon Trail (287)HikeMTB3.7 mi Kwage Mesa TrailHikeMTB3.5 mi Valle Trail (289)HikeMTB3.3 mi Pajarito Canyon (280)HikeMTB2.6 mi Los Alamos Canyon Trail (294)MTB2.6 mi Old Road North Fork TrailMTB2.1 mi AspenolaHikeMTB2.1 mi Estante TrailHikeMTB2.0 mi Fireline TrailHikeMTB1.7 mi Barranca Crossing TrailHikeMTB1.4 mi White Rock Canyon Rim Trail Upper SpurHikeMTB1.4 mi Lower AspenolaMTB1.3 mi South Bayo Bench TrailHikeMTB1.0 mi Acid Canyon TrailHikeMTB0.9 mi Bayo Bench TrailHikeMTB0.9 mi Braking BadHikeMTB0.8 mi Old Road, North ForkHikeMTB0.7 mi Fast and LooseMTB0.7 mi Gonzales RoadHikeMTB0.7 mi Walnut Canyon RoadHikeMTB0.7 mi Old Road, Middle ForkHikeMTB0.7 mi Dogpatch trailMTB0.6 mi Bayo Canyon Access TrailHikeMTB0.5 mi Mother's MilkMTB0.4 mi Old Road, South ForkHikeMTB0.4 mi Bone CrusherMTB0.3 mi Red DogMTB0.3 mi Leaping LizardMTB0.2 mi Water Bar TrailHikeMTB0.2 mi Muy LocoMTB0.2 mi Downtown AspenolaMTB0.2 mi Bayo Canyon AccessHikeMTB0.1 mi Access Trail to Estante TrailHikeMTB0.1 mi

← All Los Alamos 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.