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Niwot’s Challenge is a very difficult, grass-roots, ultramarathon in Colorado’s Front Range. It is modeled after the arduous Barkley Marathons in Tennessee, and the historic More and More Difficult 50K in New Hampshire. Much of the information for this event is kept secret with an exception for those who are accepted for entry. This is done for a variety of reasons pertaining to the safety of the event’s participants and for the future preservation of the event. If you want to know more.. you’ll just have to sign up.
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Event Venue & Nearby Stays
Human Potential Running Series, Arvada, United States
Tickets
