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Hardrock 100

Silverton, United States • 10 Jul 2026

Event overview

The Hardrock 100 Endurance Run is a mountain ultramarathon scheduled for July 10, 2026, in Silverton, Colorado. The event is a 100-mile race held on a loop course. It connects or passes near the towns of Silverton, Lake City, Ouray, Telluride and Ophir in the San Juan Mountains.

Course and elevation

The 2026 course runs clockwise through backcountry terrain in the San Juan Mountains of southwestern Colorado. The route has approximately 33,000 ft of total elevation gain and an average elevation near tree line of about 11,186 ft. The course reaches over 14,000 ft at Handies Peak.

Registration and lottery

The race uses a lottery for entry; the lottery for 2026 will take place on December 6, 2025, and the lottery opens October 1, 2025. Registration instructions note that entrants should use the same name and exact spelling as on their qualifier results, and that organizers should be informed if a name has changed. Scholarship funds are distributed to students from the four anchor towns of the race: Silverton, Ouray, Telluride and Lake City. Visit the organization's website for the most recent information.

United States Colorado Silverton

Race information

Website Registration
100 mi
100 Miles
Visit the organization's website for the most recent information.
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