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 in San Juan County, Colorado, United States, gaining 31,608 feet of elevation. The race follows a rolling elevation profile. The terrain breaks into 19 distinct sections including 6 significant climbs. The longest climb covers 10.9 miles gaining 5,367 feet at an average 18.2% grade. About 40% of the terrain is runnable, with significant hiking sections. The race opens with mixed terrain and finishes with flat terrain.