Hardrock Endurance Run

An Altra Sponsored event in 2017, the Hardrock Endurance Run is a 100 mile race through the San Juan Mountains of Colorado, featuring 33,992 ft of climbing, 33,992 ft of descent for a total elevation change of 67,984 ft, with an average elevation of 11,186 ft above sea level. It’s rugged, moody, and truly “Wild & Tough.”

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