Trail running

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161 trails in Boulder County with this feature, longest first (trails under a quarter mile are hidden).

• Boy Scout Spur

  1.70 miGround326 ft gainMountain hiking

• Re-Root

  1.70 miDirt151 ft gainDifficulty unknown

• Bright Trail

  1.68 miGround1,376 ft climb one way (downhill as drawn)Difficulty unknown

• Flagstaff Trail

  1.67 miGround1,187 ft climb one way (downhill as drawn)Difficulty unknown

• Little Raven Trail

  1.67 miGround255 ft gainDifficulty unknown

• Rocks and Roots

  1.67 miDirt10 ft gainDifficulty unknown

• Allenspark Trail

  1.67 miGround10 ft gainHiking

• Goshawk Ridge Trail

  1.64 miGround493 ft gainDifficulty unknown

• Mount Jasper South Route

  1.62 miGround1,430 ft gainMountain hiking

• Sourdough Trail

  1.57 miDirt10 ft gainMountain hiking

• Dry Saint Vrain Trail

  1.56 miDirt860 ft gainDifficulty unknown

• Eagle Trail

  1.56 miGround11 ft gainDifficulty unknown

• Greenbelt Plateau Trail

  1.56 miGravel23 ft gainDifficulty unknown

• Cannon Mountain Ditch

  1.55 miDirt0 ft gainDifficulty unknown

• Oh Danny Boy

  1.54 miGround251 ft gainDifficulty unknown

• Gillespie Gulch

  1.53 miUnpaved1,078 ft climb one way (downhill as drawn)Difficulty unknown

• E.M. Greenman Trail

  1.52 miGround1,147 ft climb one way (downhill as drawn)Difficulty unknown

• Walker Mountain

  1.52 miDirt749 ft gainDifficulty unknown

• Hidden Valley

  1.50 miGround22 ft gainDifficulty unknown

• Vesper Trail

  1.50 miUnpaved136 ft climb one way (downhill as drawn)Difficulty unknown

Data © OpenStreetMap contributors (ODbL); elevation from USGS 3DEP. Features can be missing or out of date.