Hardrock 100

San Juan County, Colorado, United States

98.9 miles (159.2 km) · 31,608 ft elevation gain · Loop · trail · Race

Hardrock 100 is a 98.9 mile loop race located in San Juan County, Colorado, United States. The route climbs 31,608 feet and descends 31,588 feet. The most significant ascent covers 19.5 miles and gains 3,865 feet. Vertical rate measures 320 feet of gain per mile. 40% of the route can be run, with walking required on steeper grades. Surface conditions are primarily trail. Technical difficulty: mountainous. This route ranks at the 90.43th percentile for difficulty among similar distances. This race serves both trail runners training for ultras and hikers exploring Colorado.