Hardrock Hundred Mile Endurance Run

• Date: 7/10/2026
• Starts: 8:00 am
• Ends: 5:00 pm

July 10 @ 8:00 am - July 12, 2026 @ 5:00 pm

The Hardrock Hundred Mile Endurance Run is an ultramarathon of 102.5 miles in length, plus 33,197 feet of climb and 33,197 feet of descent for a total elevation change of 66,394 feet, at an average elevation of over 11,000 feet. The run is held on a loop course on 4WD roads, dirt trails, and cross country in Southern Colorado’s San Juan Range.