South of Steamboat Springs in Yampa, the Allen Basin Reservoir route is a great bike mountain bike ride. From Steamboat Springs take Highway 131 south 32 miles to the town of Yampa Park in Yampa at the corner of Moffat and Main Streets (only paved road in town) near Montgomerys Store or the Antlers Cafe. The following trails begin in Yampa. From Yampa take County Road 17 at the north end of town for 5 miles, heading northwest. Turn left on gravel road #15 ( there is a sign for Crosho Lake). At the fork in the road stay right Continue up this road for 4.5 miles to Crosho I Lake. The trail begins south of the lake, heading south on trail #1181 which begins near the outhouse. The trail will cross the road and wind the aspens. Go through the gate, making sure it is closed behind you and continue downhill to Allen Basin Reservoir. The reservoir is adjacent to private land. Please respect private land boundaries. Return the way you came; back to Crosho Lake and onto Y. About 20 miles.
Overall, Allen Basin Reservoir is the 77th most popular mountain bike trail of all 175 mountain biking rides in Colorado.