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.
Lake Trail
0.55 miDifficulty unknownFisherman's Access Trail
0.55 miDirtDifficulty unknownWonderland Hill
0.55 miGroundDifficulty unknownHappy Ending
0.55 miDifficulty unknownDeath By DH
0.55 miUnpavedDifficulty unknownBaseline Trail
0.55 miGroundDifficulty unknownBrainard Lake Cutoff Trail
0.55 miGroundMountain hikingRed Deer Cutoff Trail
0.54 miGroundMountain hikingSouth Boulder Creek
0.54 miFine gravelDifficulty unknownButton Rock Trail
0.54 miDifficulty unknownUte Trail
0.54 miGroundDifficulty unknownN.C.A.R. - Bear Connector
0.54 miDirtDifficulty unknownEthel Harrold Connector
0.54 miGroundDifficulty unknownEast Boulder Trail
0.53 miDifficulty unknownMeeker Sale Road
0.53 miDifficulty unknownGlacier View Loop
0.53 miDifficulty unknownLost Meadow Trail
0.53 miDirtDifficulty unknownN.C.A.R. - Table Mesa
0.53 miDifficulty unknownShanahan - North Fork
0.52 miGroundDifficulty unknownInlet Loop
0.52 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 Boundaries can be incomplete or out of date.