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.

WARNING: This is NOT a run for beginners or whiners. This is an arduous event which includes a large number of off-trail miles. Participants are fully expected to be able to navigate using a map and/or compass; or by following another registered participant who can. All participants must fully understand that aid is limited, they are for the most part on their own, and they are expected to make S.M.A.R.T. decisions based on their individual limitations. This is also an event where a certain amount of irreverence is enjoyed amongst the participants. Do not apply for entry if you are easily offended by off color humor, or if ripping pages out of historical or religious works in not something you care to partake in. You have been warned.