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).
Upper Pixie Duff
1.35 miDirt564 ft climb one way (uphill as drawn)Difficulty unknownHomestead Trail
1.29 miGround447 ft climb one way (uphill as drawn)Difficulty unknownOverbrook Trail
1.27 miFine gravel86 ft gainDifficulty unknownRanger Trail
1.27 miGround1,158 ft climb one way (downhill as drawn)Difficulty unknownFuzzy Spirit
1.27 miDirt11 ft gainDifficulty unknownMiddle Saint Vrain Trail
1.24 miGround62 ft gainMountain hikingSanitas Valley Trail
1.23 miGravel555 ft climb one way (downhill as drawn)HikingDry Creek
1.22 miGravel50 ft gainDifficulty unknownBetasso Link Trail
1.21 miDirt604 ft climb one way (uphill as drawn)Difficulty unknownLichen Loop Trail
1.21 miDirt247 ft gainDifficulty unknownMount Sanitas Trail
1.20 miGround1,287 ft climb one way (downhill as drawn)Difficulty unknownInlet Trail
1.20 miDirt304 ft gainDifficulty unknownConey Non-Motorized Spur
1.20 miGround42 ft gainDifficulty unknownGregory Canyon Trail
1.19 miDirt10 ft gainDifficulty unknownSleepy Lion Trail
1.18 miGround51 ft gainDifficulty unknownSunshine Canyon Trail
1.17 miGround303 ft gainDifficulty unknownShadow Canyon Trail
1.16 miGround1,579 ft climb one way (uphill as drawn)Difficulty unknownForsythe Canyon Trail
1.16 miGround366 ft climb one way (downhill as drawn)Difficulty unknownSaddle Rock Trail
1.16 miGround1,377 ft climb one way (uphill as drawn)Difficulty unknownNorth Rim Trail
1.15 miGround31 ft gainDifficulty unknown
Data © OpenStreetMap contributors (ODbL); elevation from USGS 3DEP. Features can be missing or out of date.