The trail is completely on the dirt road. However, there are alot of singletrack trails off to the side that you can explore on. It is a really neat ride.
How to get there:
From Dillon: Go south on Rt 6 past Keystone. Turn right on Montezuma Rd and drive for 4.5 miles. After crossing the Snake River, park at Peru Creek. Ride up Peru Creek Rd heading northeast.