Custer County, Colorado
The Rainbow Trail runs for over 100 miles along the eastern edge of the Sangre de Cristo Mountains from Salida to Westcliffe. Medano Pass Road intersects the Rainbow Trail before terminating in the Great Sand Dunes National Park. Only licensed, street-legal vehicles are allowed west of the Medano Pass summit and into the Great Sand Dunes National Park and Preserve.
RD559 Medano Pass
TR1336 Rainbow Trail
The Rainbow Trail is open to motorcycles and ATVs. The Medano Pass Trail is open to licensed, street-legal full-size 4WD vehicles and motorcycles.
Only street-legal, licensed vehicles are allowed to enter the Medano Pass trail from the west through Great Sand Dunes National Park. Unlicensed vehicles are allowed to approach the park from the east but must turn around at Medano Pass and are not allowed to enter the Great Sand Dunes National Park or Preserve.
From Westcliffe: Head south on S 6th St/CO-69 for approx. 3 miles. Turn right at County Rd-140/Schoolfield Rd. Continue on County Rd-140 for approx 5.5 miles to Alvarado Campground
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.
San Carlos Ranger District, (719) 269-8500