Northwest of Boulder and northeast of Jamestown, the Left Hand Canyon OHV Area has a great network of roads totaling over 10+ miles open to ATV riding. The very old logging roads are very challenging trails now. This area has been the site of numerous conflicts with nearby land owners so be sure to stay on public roads and KNOW where you are riding at all times. Otherwise, this area may be closed to riding.
To reach the ATV riding trailhead for the Lefthand Canyon OHV Area from Boulder, head north on US36 to Altona. Turn left heading west on Lefthand Canyon Drive for about 3.5 miles. The trailhead and trail system on the righthand (north) side of the road.
The Motorized Trails shown on the map are open to dirt biking, mountain biking, hiking and horseback riding. The 4WD Roads shown on the map are open to ATV riding and dirt biking. Note: FS286B is currently closed.
Note: Colorado residents must register their off-highway vehicle with the Colorado State Parks (303) 866-3437. Out-of-state residents who bring OHVs into Colorado must purchase a Colorado Non-Resident OHV permit which is valid from the date of purchase through the following March 31. These permits can be purchased anywhere you get your hunting/fishing licenses in All off-highway vehicles must have an approved muffler and spark arrester. These requirements are subject to change so make sure to contact the Colorado State Parks prior to using your off-highway vehicle.
Note: As of September 2007, ATV riding on Forest Service roads is only permited on roads marked as open to ATV. All ATVs must be registered.