Boulder County
County. Find your line here.
Trails772
Total length605 mi
Known loops18
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.
Social 5
0.35 miGroundDifficulty unknownForsythe Canyon Trail
0.35 miGroundHikingMcCaslin Trail
0.35 miDifficulty unknownUte Trail
0.34 miGroundDifficulty unknownSkinny Pete
0.34 miGroundDifficulty unknownHobbit 3
0.34 miHikingUDC Midnight Rock and Vanishing Point
0.33 miDifficulty unknownWalk The Dog
0.33 miGravelDifficulty unknownUpper Fireman Hill Bypass
0.33 miGroundDifficulty unknownCoulson Gulch Trail
0.33 miDifficulty unknownNeedle Eye Bypass Trail
0.33 miMountain hikingInlet Loop
0.33 miDifficulty unknownTantra Park Path
0.32 miDifficulty unknownBear Peak Trail
0.32 miGroundMountain hikingGunbarrel Open Space Trail
0.32 miDirtDifficulty unknownOld County Road 124
0.32 miUnpavedDifficulty unknownFS 331.1C
0.32 miDirtDifficulty unknownHorseshoe Creek
0.32 miDifficulty unknownLongs Peak Trail (The Ledges)
0.31 miUnpavedAlpine hikingSherwood Forest
0.31 miDifficulty 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 Boundaries can be incomplete or out of date.