A fully supported 100-mile festival loop with sauna, cold plunge, and crew every 2 miles
Other trail races within 66 miles
Weld Your Mettle's 100-mile event challenges runners to repeatedly loop a flat, 4-mile groomed dirt out-and-back on a 146-acre private property outside Eaton, Colorado, until reaching 100 miles. What sets this race apart is its festival infrastructure: aid station and crew access every 2 miles, a fully stocked food barn, sauna, cold plunge, and massage zone are available throughout the entire 36-hour event window. Panoramic views of the Northern Colorado Front Range and Longs Peak surround the flat course. Supported by local nonprofits, this community-focused event emphasizes endurance, wellness, and connection.
Some ultra experience recommended
Eaton, CO, United StatesMay 30, 2026
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Free self-camping (tent and RV/camper) on the 146-acre property, first-come first-serve — no reservation needed. Camp setup begins Friday May 29 at noon. Paid Glamping Tents available via Sundrift Society as a race add-on (queen beds, bedding, weather-proof floor; tents reserved Friday–Monday).
Afternoon thunderstorms possible in late May on this flat, exposed Northern Colorado course
Late May temperatures can range from warm (70s°F) during the day to cold overnight; overnight sections require layering
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