East of Denver near Watkins, the Watkins Motocross area has a full-size motocross pro-style track, an intermediate track, and a peewee track.
To reach dirt biking at Watkins Motocross from US70, head east to Watkins (east of DIA) and exit at Watkins Rd, #295 and head south for 4 miles. Turn right (west) at CR18/Jewell Ave. Watkins Raceway will be 2 miles down the road on the right (north) side.
Note: Colorado residents must register their off-highway vehicle with the Colorado State Parks (303) 866-3437. Non-residents are not required to register in Colorado, if they are registered in their home states. 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.
Overall, Watkins Motocross is the 48th most popular dirt bike trail of all 93 dirt biking rides in Colorado.