Boulder County

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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.

• Deer Ridge Spur Road out and back

  1.40 miDifficulty unknown

• Ralphie's Ralpher + Off Camber + Levee Trail + 1 more trails out and back

  1.39 miDifficulty unknown

• New 1

  1.39 miDirtDifficulty unknown

• Beaver Reservoir Cutoff Trail out and back

  1.39 miDifficulty unknown

• Crash'n

  1.38 miGroundDifficulty unknown

• Jean Lunning Trail

  1.38 miGroundHiking

• Cardinal Hill Trail

  1.38 miGroundDifficulty unknown

• Jean Lunning Trail + Niwot Cutoff Trail out and back from Long Lake Trailhead

  1.37 miDifficulty unknown

• Skunk Canyon + Holly Berry + Skunk Connector out and back

  1.37 miDifficulty unknown

• Singletree Trail + Meadowlark Trail + Meadowlark Trail spur out and back

  1.37 miDifficulty unknown

• Longs Peak Trail (The Ledges) + Longs Peak Trail (The Trough) + Longs Peak Trail (The Narrows) + 1 more trails out and back

  1.36 miDifficulty unknown

• Joder Ranch Trail

  1.36 miDirtDifficulty unknown

• Sawhill Ponds

  1.36 miLoopDifficulty unknown

• Fern Canyon + Mesa Trail + Shanahan - Mesa Trail loop

  1.35 miLoopDifficulty unknown

• Upper Pixie Duff

  1.35 miDirtDifficulty unknown

• Singletree Trail + Coal Creek Crossing Connector Trail out and back

  1.34 miDifficulty unknown

• Whoopp-Di-Doos + Handshake Trail + Aspen Alley Trail loop

  1.34 miLoopDifficulty unknown

• Pipeline + Dog Trail/Doe Trail out and back

  1.33 miDifficulty unknown

• Rocks and Roots + New 1 + Social 40 + 1 more trails loop

  1.33 miLoopDifficulty unknown

• Sacred Cliffs out and back

  1.33 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 Boundaries can be incomplete or out of date.