Hardrock 100

JUL
9-11
2027
A 100 mile loop around Silverton, Colorado through high alpine terrain with about 66,882 feet of elevation change, entry by lottery and a dedicated scholarship program.
9-11 Jul 2027
100 miles

Always double-check with the organizer's website! This page may contain affiliate links.

About the race

The Hardrock Hundred Mile Endurance Run, often called Hardrock 100, is a 100 mile loop ultramarathon around Silverton, Colorado, in the San Juan Mountain Range. The course runs on 4WD roads, dirt trails, and cross country terrain at high elevation and crosses public lands under special permit from the U.S. Bureau of Land Management and the U.S.

Forest Service. The route totals 66,882 feet of elevation change, comprised of 33,441 feet of climb and 33,441 feet of descent, with an average elevation of 11,186 feet. The course lowest point is 7,680 feet at Ouray and the highest point is 14,048 feet at Handies Peak. The event uses a loop course and publishes course maps, a runners manual, and a volunteer manual. Entry is managed by a lottery process.

The event maintains a scholarship program that awards between 500 and 2,000 USD to people from underrepresented communities or with barriers to participation; scholarship applications close December 15. The event also has a transgender and non binary athlete inclusion policy that creates a non binary division and respects self declared gender during lottery and registration, with formal eligibility challenges limited to top three finishers through a confidential process. The organization posts results and photos for recent years and credits a network of volunteers and aid stations that support the running operation. Visit the organization's website for the most recent information.

Events nearby

An open-registration uphill race from Telluride to San Sophia Ridge where participants use skis, splitboards, snowshoes, or microspikes; proceeds support avalanche education.
A 100 mile mountain ultramarathon in Ouray, Colorado with about 41,862 ft of climbing, mandatory volunteer service or $100 opt out, live SPOT tracking and cash prizes.
Trail races in Silverton Colorado on July 17 2027 offering 50K, marathon and 8 mile courses on the Alpine Loop through historic mining towns.
A mountain trail race in Silverton, Colorado on July 18, 2027 offering 12 Mile and 11K courses that climb to about 13,060 ft with aid stations and a cupless policy.
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.