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.
Niwot Loop Trail
0.46 miConcreteDifficulty unknownLink Trail
0.45 miCompactedDifficulty unknownBear Canyon - NCAR Trail
0.45 miGroundDifficulty unknownGoat Path Trail
0.45 miGroundMountain hikingCherryvale Trail
0.45 miFine gravelDifficulty unknownArapaho Peak Southeast Ridge Route
0.44 miDirtDemanding mountain hikingBaughman'S Saddle Single Track Trail
0.44 miLoopGroundDifficulty unknownMcClintock Upper Trail
0.44 miUnpavedMountain hikingCastle Cutoff
0.44 miDirtDifficulty unknownPipeline
0.44 miGravelDifficulty unknownMount Alt Park
0.44 miDifficulty unknownWest Ridge Climbing Access Trail
0.44 miDirtDifficulty unknownGoodhue
0.43 miConcreteDifficulty unknownWonderland Path
0.43 miPavedDifficulty unknownWiniger Ridge Road
0.42 miDifficulty unknownMitchell Lake Trailhead Connector Trail
0.42 miDirtDifficulty unknownCannon Mountain Ditch
0.42 miDirtDifficulty unknownObservatory Trail
0.42 miGroundDifficulty unknownButton Rock Mountain Connect
0.42 miDifficulty unknownSkunk Canyon
0.41 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 Boundaries can be incomplete or out of date.