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Niwot's Challenge

Sedalia, United States • 10 May 2025

Niwot's Challenge is a challenging ultramarathon held annually 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 using a map and compass, with limited aid available. The race includes off-trail miles and emphasizes self-sufficiency, making it unsuitable for beginners. Runners can aim for various achievement levels, including "Chief" and "Deity" status, based on their performance. The event fosters a unique community spirit, with participants encouraged to attend preparatory "Book Settings" to familiarize themselves with the course. 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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