Boulder County
County. Find your line here.
Trails736
Total length610 mi
Known loops19
Counts are trails in our data whose start point lies inside this boundary. A loop is counted only where the source marks it as one.
Search trails near Boulder County
Longest trails
Ordered by measured length. This is a simple fact, not a quality ranking.
Fowler West Trail
0.38 miDirtDifficulty unknownPipeline
0.37 miGravelDifficulty unknownBonus
0.37 miGroundDifficulty unknownNorth Goat Path Trail
0.37 miGroundDifficulty unknownOld Kiln Spur
0.37 miGroundDifficulty unknownButton Rock Trail
0.36 miGroundDifficulty unknownSocial 41
0.36 miDirtDifficulty unknownSkills Loop
0.36 miDirtDifficulty unknownCaribou Park Spur
0.36 miDirtDifficulty unknownRZA
0.36 miDifficulty unknownFern Canyon
0.36 miGroundDifficulty unknownMoccasin Trail
0.36 miDirtDifficulty unknownUpper Ridge Single Track Trail
0.36 miGroundDifficulty unknownLehigh Connector - South
0.35 miGroundDifficulty unknownLevee Trail
0.35 miGravelDifficulty unknownFlagstaff Trail
0.35 miGroundDifficulty unknownHarney Lastoka
0.35 miGravelDifficulty unknownMiller Rock Shortcut
0.35 miGroundDifficulty unknownNiwot Loop Trail
0.35 miDifficulty unknownPowerline Trail Corridor
0.35 miFine gravelDifficulty unknown
Official information
Parking, fees, permits, closures and rules are set by the managing agency and change often. We don't copy them here: check the official page before you go. Official page for Boulder County ↗ (link last checked 2026-10-17)
Source
© OpenStreetMap contributors (ODbL). Area boundary from OSM relation/1411337. Boundaries can be incomplete or out of date.