12 hours on a private working ranch in Colorado's Front Range foothills
Other trail races within 42 miles
A 12-hour looped trail run on the private trails of Sylvan Dale Guest Ranch, a working cattle ranch in the foothills west of Loveland. Runners complete as many laps of the roughly 11-kilometer big loop as possible before the 7pm cutoff, navigating mixed terrain that includes open meadows, wooded sections, and multiple creek crossings. A single aid station at the start/finish offers full food and drink support every lap. Complete 9 or more laps to earn the coveted 100K finisher buckle.
Some ultra experience recommended
Loveland, CO, United StatesApril 11, 2026
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Tent, car, truck, and van camping allowed on the ranch property. No RVs or trailers permitted. General camping: $25/night; premium camping near the start/finish area: $35/night. Added during registration. Ranch cabins and lodging also available through Sylvan Dale Guest Ranch (first-come, first-served).
April conditions in Northern Colorado are unpredictable — temperatures can range from below freezing to 70°F within a single day. Bring layers and check the forecast.
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