Description:
The Bearlodge Mountains are in the Black Hills Nat'l Forest on the Wyoming side near Sundance, Wy. There must be hundreds of miles of logging roads, fire roads and trails in the area. Beautiful forest and off road camping is allowed just about anywhere. It's a great place to explore. There are also some nice hiking, biking and running trails there. Those are called the Sundance & Carson Draw Trails.
The other place I went was in South Dakota near Spearfish Canyon. There's some nice trails round there to explore, but I didn't spend as much time there as I did on the Wyoming side.