Kelly Flats

Where To Go: Kelly Flats | Stay The Trail

Larimer County, Colorado

How To Get There

From US-287 & Poudre Canyon Highway (14), head west approximately 25.3 Miles until you reach the Kelly Flats Trail Head on the North Side of the Road. It is about 10 miles past the Mishawaka bar and grill.

Detailed Description

Heart Attack Hill is loose, rocky and steep with concrete at steepest part on top

Heart Attack Hill Alternate has several steep sections and more narrow, but slightly easier

The remainder of the Kelly Flats Road is easy and scenic


Please be courteous to nearby homeowners and observe speed limits on the center sections of the Kelly Flats Road

Recommended Maps

Trails Illustrated #101 Cache La Poudre, Big Thompson

Trails Illustrated #112 Poudre River, Cameron Pass

USFS Roosevelt and Arapaho NF

Roosevelt Canyon Lakes MVUM

Adopted Trails

**FR168 Adopted by Larimer County 4WD Club

Trail System Maps & GPS Files

Click District name or icon to visit MVUM Page or Download Ranger District MVUM Files Directly.

Download Files Directly:


Click Here to Download

47 mile loop through Kelly Flats, Seven Mile, and the singletrack Swamp Creek Cutoff. Connects trails using country roads and singletrack so you must be street legal and on a motorcycle for this loop. Be prepared for big hills, lots of rocks, and water.

Northern Colorado Trail Riders

Trail System Photos

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Trail System Videos

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Area Trails

Trail NameTrail WidthLength*

*Trail lengths are not guaranteed to be accurate

Trail System Information


Location is:

Staging Area At Trailhead

Nearest City:

Fort Collins


6 - 8


20 Miles round trip


1.5 hours


7000 to 10500 feet

Best For:






Note that not all of the trails in an area will be open to all vehicle types. Follow the Motor Vehicle Use Maps (MVUM)s and signage for the area and ride only on trails open to and wider than your OHV.