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 40
0.29 miDifficulty unknownHawkins Surguine Spur Trail
0.29 miDifficulty unknownSouth Boulder Creek
0.29 miFine gravelDifficulty unknownT-33A Crash Trail
0.29 miDirtDifficulty unknownCommunity College
0.28 miUnpavedDifficulty unknownShadow Canyon South Spur Trail
0.28 miGroundDifficulty unknownLittle More
0.28 miDirtDifficulty unknown6th Street Connector Trail
0.28 miGroundDifficulty unknownCentral Campus Mall
0.28 miPavedDifficulty unknownBoulder-Grand Pass trail (unmaintained)
0.28 miDemanding mountain hikingWrong Turn Trail
0.28 miDirtDifficulty unknownHarney Lastoka
0.27 miGravelDifficulty unknownRed Rocks Spur Trail
0.27 miGroundDifficulty unknownClear Cut Trail
0.27 miDirtDifficulty unknownLower Ridge Road
0.27 miGroundDifficulty unknownCMC Cabin Cutoff
0.27 miGroundDifficulty unknownSouth Boulder Peak Trail
0.27 miGroundDemanding mountain hikingSide Trail
0.27 miGroundDifficulty unknownM&M
0.27 miDirtDifficulty unknownWildwood Trail
0.27 miDirtDifficulty 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 Boundaries can be incomplete or out of date.