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Very Difficult
“Steep, loose, and rowdy ”
0.2
Miles0.3
KMSingletrack
Very Difficult
Singletrack
Very Difficult
Land Manager: USFS - Boulder Ranger District Office
Heil Outer Loop from Corral TH
14.1 mi 22.6 km • 1,549' Up 472.24 m Up • 1,550' Down 472.41 m Down
Lyons, 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
Super Betasso
16.3 mi 26.2 km • 1,788' Up 545.03 m Up • 1,788' Down 544.87 m Down
Boulder, CO
Chapman Drive Out-And-Back
11.2 mi 18.1 km • 1,330' Up 405.46 m Up • 1,330' Down 405.44 m Down
Boulder, CO
Hall Ranch
11.8 mi 18.9 km • 1,750' Up 533.54 m Up • 1,750' Down 533.51 m Down
Lyons, CO
Hall Ranch Full Loop
12.0 mi 19.3 km • 1,560' Up 475.46 m Up • 1,560' Down 475.45 m Down
Lyons, CO
Unknown
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