Drive to Park Reservoir Road 293, off of Redgrade Rd from Sheridan. Continue left on 293 to get around the lake and another left on 289 to start climbing to Big Horn Res. Start biking from here if you do not have a nice 4x4 vehicle.
Once at Big Horn Reservoir, go right, past the gate, and over the dam. Ride this scenic two-track around the lake and all the way to Cross Creek Reservoir, enjoying the nice views of the Bighorn mountains along the way.
On the way back, look to your right (east) to find a singletrack trail, Solitude Loop Trail - #038
. Take this for just a moment and turn left on to the Big Horn Res trail before the Solitude Loop Trail - #038
goes up a steep hill. The majority of the Solitude Loop Trail - #038 is in the Cloud Peak Wilderness which does not allow bikes.
Enjoy the great singletrack back to Bighorn Res and on the other (east) side of the lake. Don't fall on the sandy beaches!