Hardrock 100
Silverton, United States • 11 Jul 2025
The Hardrock 100 is a challenging 100-mile ultramarathon held in the San Juan Mountain Range of Southern Colorado. Participants face a total elevation change of 66,394 feet, with an average elevation of over 11,000 feet. The course features a mix of 4WD roads, dirt trails, and cross-country sections, creating a demanding loop that connects historic mining towns such as Silverton, Ouray, and Telluride. The event emphasizes community involvement and supports local education through the Joel Zucker Memorial Scholarship Fund. The Hardrock 100 is recognized for its rugged terrain and breathtaking scenery, attracting endurance runners from around the world. Visit the organization's website for the most recent information.