Mammoth Gulch Road, Boulder County Colorado OHV Trails

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Boulder County Colorado OHV Trails

Mammoth Gulch Road

Arapaho and Roosevelt National Forests and Pawnee National Grassland

Located within the Boulder Ranger District, the 4 mile Mammoth Gulch Road is fairly easy & not very steep. It travels up the valley for 2 miles until closed by a gate on private property.

To reach Mammoth Gulch Road:

From the north, travel along CO 119 south of Nederland to CR 16 (East Portal Road). Follow CR 16 west to CR 3N (Mammoth Gulch Road) and travel south for 1.5 miles to NFSR 176.

From the south travel along CR 4 (Apex Road) from CO 119 near Clear Falls, 2 miles north of Blackhawk.

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