Kelly Flats

This extremely difficult trail is one of the best in northern Colorado.

Total Miles
Plan with onX Offroad


2 to 4

Technical Rating

Best Time

Trail Overview

Head straight uphill from out of the Cache La Poudre River Valley and wind across a a ridge high above the Mummy Range. Two well-known obstacles, The Chutes and Heart Attack Hill. Both have bypasses, but they aren't easy. ATVs will have an especially hard time on this trail.


Difficult. The first part of trail is extremely steep and rocky. Middle is easy as it passes through a residential area. Last part can have large mud holes after a rain. Body damage is a frequent occurrence on the Chutes.


Prior to 2005, part of the trail around 'The Chutes' was graded smooth because of residential development in the area. 'The Chutes' themselves still remain intact and may be driven. Be careful not to miss them as you go by.

Access Description

From Highway 287 northwest of Fort Collins, take Highway 14 west about 25 miles. Turn right just after mile marker 97 across from F.S. Kelly Flats Campground.

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