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Niwot's Challenge

Sedalia, United States • 10 May 2025

Niwot's Challenge is a challenging ultramarathon held in Colorado's Front Range, designed for experienced runners. Modeled after the Barkley Marathons, this grassroots event features a secretive course that requires participants to navigate primarily off-trail using a map and compass. The event includes various loops, with distances ranging from approximately 24 to 100 miles, and emphasizes self-sufficiency, as aid is limited. Participants are encouraged to attend preparatory "Book Settings" to familiarize themselves with the course. With a capacity of 40 runners, this adventure prioritizes safety and community, making it a unique experience for seasoned athletes. Visit the organization's website for the most recent information.

United States Colorado Sedalia

Race information

Website
100 mi
40800 m+
Deity Loop
50 mi
20400 m+
Chief's Loop
24 mi
10000 m+
Burn Loop
Visit the organization's website for the most recent information.
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