Hardrock 100
Silverton, United States • 10 Jul 2026
Hardrock Hundred Endurance Run : event overview
The Hardrock Hundred Endurance Run is a 100 mile ultramarathon held in the San Juan Mountain Range of southwestern Colorado. The course alternates each year; 2026 is scheduled as a clockwise loop that connects or passes near the old mining towns of Silverton, Lake City, Ouray, Telluride and Ophir. The route is a mix of 4WD roads, dirt trails and cross country terrain.
The course totals 66,394 feet of elevation change, with approximately 33,197 feet of ascent and 33,197 feet of descent. The average elevation along the route is 11,186 feet, the low point is near Ouray at 7,680 feet, and the high point is Handies Peak at 14,048 feet. All or part of the operation takes place on Public Lands under special permit from the U.S. Bureau of Land Management and the U.S. Forest Service.
The organization also manages related activities and programs. These include an annual art contest to select the official event print, a scholarship fund that awards college and continuing education aid to local students, and a trail fund that supports local trail work and search and rescue organizations. Additional event materials include course maps, a runners manual and a volunteer manual. Visit the organization's website for the most recent information.