Hardrock 100
Race Day Weather
Cool start, warming finish
Runners will face a cool start at 47°F, warming to 66°F by the finish. A light 6 mph wind will provide minimal impact, though gusts may reach 23 mph. Conditions will be most challenging during the climbs from miles 19 to 21 and 44 to 53 where runners should pace conservatively. Hydration is crucial as humidity hovers around 48%, especially as temperatures rise in the valley.
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Race Info
The Hardrock 100 is a grueling ultramarathon that challenges runners with a 102.5-mile loop through Colorado's rugged San Juan Mountains. Traversing 4WD roads, dirt trails, and cross-country terrain, the course features a cumulative elevation change of 66,394 feet, with an average elevation exceeding 11,000 feet. Runners navigate 13 major passes between 12,000 and 13,000 feet, culminating at the 14,048-foot summit of Handies Peak. The race honors the area's mining heritage, requiring participants to "kiss the Hardrock," a ram's head painted on a stone, upon completion. Held annually in early July, the event is renowned for its demanding conditions, including steep climbs, snow packs, river crossings, and boulder fields, making it a premier test of endurance and mountaineering skills.
