Hardrock Hundred Endurance Run

The Hardrock Hundred Endurance Run is an ultramarathon of 102.5 miles in length, held on a loop course  in Southern Colorado's San Juan Range. 

In addition to providing a unique and challenging running experience for the world's ultra runners, the Hardrock Hundred is committed to long-term, mutually-beneficial relationships with the communities that are part of our event and we foster this relationship through economic opportunities and financial and administrative assistance. 

This assistance is centered around: trail use and etiquette, post secondary educational opportunities for area students and helping local Search and Rescue in their mission to provide assistance to those requiring life saving measures in the San Juan mountains.

Please join us in supporting these efforts in some of Colorado's mountain towns this Colorado Gives Day!