About This Race
The Hardrock 100 stands as one of the world's most demanding ultramarathons, traversing 100 miles through Colorado's rugged San Juan Mountains. This legendary race combines extreme altitude, technical terrain, and wilderness navigation challenges that test every aspect of a runner's mountain skills. With an average elevation above 11,000 feet and 33,000+ feet of climbing, runners cross thirteen major passes and summit 14,048-foot Handies Peak while navigating everything from 4WD roads to cross-country sections. Held annually since 1992 in alternating directions around a challenging loop course, the race connects the historic mining towns of Silverton, Telluride, Ouray, and the ghost town of Sherman. The 48-hour cutoff reflects the course's graduate-level difficulty, where mountaineering skills matter as much as running fitness. Runners don't cross a traditional finish line but instead must 'kiss the Hardrock'—a ram's head painted on mining stone—symbolizing their conquest of one of ultrarunning's ultimate tests.
Hardrock is not a trail race in any conventional sense. Starting and finishing in Silverton, the loop traverses some of the most remote and exposed terrain in the Colorado Rockies. The thirteen major passes — most above 12,000 feet, several above 13,000 — require sustained effort at altitude where the air is thin and weather arrives fast. Handies Peak, the high point at 14,048 feet, is a legitimate fourteener summit. The descents are as demanding as the climbs: loose scree, steep snowfields, and rocky singletrack that punishes tired legs. Between passes, the route drops into mountain valleys along rushing creeks before climbing again. Stream crossings are frequent and can be thigh-deep during snowmelt. Navigation is part of the challenge — course markings are minimal by design, and runners are expected to carry maps and use them. The direction alternates each year (clockwise and counter-clockwise), and each direction presents its own character. This is a race for mountain people who happen to run, not runners who happen to be in the mountains.
Elevation Profile
The course gains 33,990 ft over 103 miles, with the steepest section between mile 6–mile 7.
Course Map
Route shown is approximate and for illustration purposes.
Practical Info
High-altitude mountain conditions with potential for snow, lightning, and rapid temperature changes even in July.
Durango (DRO) or Montrose (MTJ)
Silverton is a small mountain town with limited lodging. Book well in advance. Many runners camp or stay in nearby Ouray or Durango.
Best For
Notable Features
The Hardrock 100 represents the pinnacle of high-altitude mountain running, distinguished by its requirement to summit thirteen major passes above 12,000 feet including Colorado's Handies Peak at 14,048 feet. The unique tradition of 'kissing the Hardrock' rather than crossing a finish line, combined with the alternating yearly direction and the course's integration of historic mining routes through ghost towns, creates an experience that transcends typical ultramarathon competition into the realm of mountain pilgrimage.
Prepare for This Race
GEAR GUIDE
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GEAR GUIDE
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A tested guide to the best hydration vests for ultra marathons and long trail races — from lightweight racing vests to high-capacity mountain packs.
RACE PREPARATION
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