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.
Inlet Loop
0.52 miDifficulty unknownBluebell Mesa Trail
0.52 miGroundDifficulty unknownN.C.A.R. - Table Mesa/Bear
0.52 miGravelDifficulty unknownWest Face Redgarden Climbing Access Trail
0.52 miDirtDifficulty unknownGinger Booty
0.52 miGroundDifficulty unknownBeauty and the Beast
0.51 miGroundDifficulty unknownTeller Lake #5 trail
0.51 miDirtDifficulty unknownBills Loop - Private Trail
0.51 miDifficulty unknownTwin Saddles Single Track Trail
0.51 miGroundDifficulty unknownSalamander Lake Trail
0.51 miGroundDifficulty unknownDegge
0.51 miGroundDifficulty unknownColorado and North Western R. R
0.51 miDifficulty unknownDevils Thumb Bypass
0.51 miMixedMountain hikingMeadow Trail
0.50 miDirtDifficulty unknown19th Street Path
0.50 miConcreteDifficulty unknownRhubarb
0.50 miUnpavedDifficulty unknownLeft Hand Access Trail
0.49 miGroundDifficulty unknownJenny Creek Trail
0.49 miGroundMountain hikingMickey Mouse Trail
0.49 miGroundDifficulty unknownTwin Lakes Off-Leash Trail
0.48 miGravelDifficulty 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 Boundaries can be incomplete or out of date.