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Very Difficult
“One of Lefthand's steepest trails! ”
0.2
Miles0.3
KMSingletrack
Very Difficult
Singletrack
Very Difficult
Land Manager: USFS - Boulder Ranger District Office
Heil Outer Loop from Corral TH
13.9 mi 22.4 km • 1,585' Up 482.99 m Up • 1,592' Down 485.09 m Down
Lyons, CO
Heil to Picture to Hall and Back
34.1 mi 54.9 km • 3,648' Up 1111.87 m Up • 3,648' Down 1111.94 m Down
Lyons, CO
North Boulder Loop
8.3 mi 13.4 km • 372' Up 113.47 m Up • 371' Down 113.22 m Down
Boulder, CO
South Saint Vrain Figure 8
16.3 mi 26.2 km • 2,072' Up 631.58 m Up • 2,086' Down 635.74 m Down
Nederland, CO
Sugarloaf to Gordon Gulch Loop
13.5 mi 21.7 km • 1,590' Up 484.64 m Up • 1,607' Down 489.88 m Down
Boulder, CO
Hall Ranch Intermediate Loop
10.5 mi 16.9 km • 1,271' Up 387.32 m Up • 1,271' Down 387.29 m Down
Lyons, CO
Unknown
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