West of Castle Rock in the Rampart Range area, the Rainbow Falls OHV Area has miles of forest roads open to dirt bike riding.
To reach the trailhead from the intersection of US 24 and SR 67 in Woodland Park, go north on SR 67 for 10.7 miles. Turn right on a Forest Road. Westcreek is 4 miles further. After turning on the Forest Road, stay right and park up about 0.3 miles from SR 67.
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, Rainbow Falls OHV Area is the 4th most popular dirt bike trail of all 93 dirt biking rides in Colorado.