Larimer County, Colorado
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.
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
Trails Illustrated #101 Cache La Poudre, Big Thompson
Trails Illustrated #112 Poudre River, Cameron Pass
USFS Roosevelt and Arapaho NF
Roosevelt Canyon Lakes MVUM
**FR168 Adopted by Larimer County 4WD Club
Click District name or icon to visit MVUM Page or Download Ranger District MVUM Files Directly.
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
Kelly Flats Road (168.0.1)
Heart Attack Hill (168)**
Heart Attack Hill Alternate (168C)
Staging Area At Trailhead
6 - 8
20 Miles round trip
7000 to 10500 feet
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.
Canyon Lakes Ranger District, (970) 295-6700