Boulder County

← All areas

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.

• Forsythe Canyon Trail

  1.16 miGroundDifficulty unknown

• Saddle Rock Trail

  1.16 miGroundDifficulty unknown

• TNT Trail

  1.16 miDifficulty unknown

• Niwot Mountain

  1.15 miGroundMountain hiking

• Boulder-Grand Pass Trail

  1.15 miGroundMountain hiking

• Rock Creek Trail

  1.15 miDifficulty unknown

• Coon Trail

  1.14 miDirtHiking

• Lazy H Horse Trail Net

  1.14 miGroundDifficulty unknown

• Box-Eagle Lakes Route

  1.13 miGroundMountain hiking

• Schoolbus Trail

  1.12 miDirtDifficulty unknown

• Prairie Vista Trail

  1.12 miGroundDifficulty unknown

• Enchanted Mesa Trail

  1.12 miDifficulty unknown

• Foothills North Trail

  1.12 miDirtDifficulty unknown

• Kinnickinnick Loop

  1.11 miLoopDirtHiking

• Lower Pixie Duff

  1.11 miDirtDifficulty unknown

• Spruce Gulch Road

  1.11 miDifficulty unknown

• Somerset Trail

  1.10 miFine gravelDifficulty unknown

• Spring Brook Loop South Trail

  1.10 miDirtDifficulty unknown

• Blue Dot

  1.09 miGroundMountain hiking

• Crook's Nook

  1.09 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 Boundaries can be incomplete or out of date.