Trail running
Unpaved trails of a mile or more: a computed starting point for runners, not an endorsement of any route.
161 trails in Boulder County with this feature, longest first (trails under a quarter mile are hidden).
Buchanan Pass Trail
11.6 miGround2,130 ft gainMountain hikingArapaho Glacier Trail
7.57 miDirt1,544 ft gainMountain hikingMesa Trail
6.26 miGround928 ft gainDifficulty unknownPawnee Pass
5.43 miGround1,438 ft gainMountain hikingFinch Lake - Pear Lake Trail
5.39 miDirt238 ft gainHikingPicture Rock Trail
5.18 miDirt10 ft gainDifficulty unknownBeaver Creek Trail
5.04 miGround1,613 ft gainMountain hikingSourdough Trail
4.91 miGround271 ft gainMountain hikingRollins Pass Trail
4.76 miGround608 ft gainDifficulty unknownNight Hawk Trail
4.57 miDirt180 ft gainDifficulty unknownPinewood Tech
4.45 miGround1,383 ft gainDifficulty unknownSandbeach Lake Trail
4.21 miGround2,009 ft gainDifficulty unknownWalker Ranch Loop
4.06 miDirt615 ft gainDifficulty unknownBitterbrush Trail
3.80 miDirt1,057 ft gainHikingNorth Sky Trail
3.68 miDirt222 ft gainDifficulty unknownNorth Trail
3.56 miGravel948 ft gainDifficulty unknownHigh Lonesome Trail
3.43 miGround702 ft gainDifficulty unknownWalker Ranch Loop
3.41 miDirt930 ft gainDifficulty unknownWild Basin Trail
3.32 miDirt1,054 ft gainHikingSourdough Trail
3.24 miGround449 ft gainDifficulty unknown
Data © OpenStreetMap contributors (ODbL); elevation from USGS 3DEP. Features can be missing or out of date.