Middle Run Natural Area
With plenty of smooth, fast single track several TTF's and a black diamond section, there is plenty at Middle Run to keep the intermediate level mountain biker entertained. The park has about 10 miles of outstanding mountain biking trails.
Don't miss the black diamond loop which has several insane TTF's, including a swinging bridge sandwiched between two teeters, some long, narrow bridges, and several creatively named stunts like Endo Inducer and Shinburger Skinny.
For a more laid back ride, White Clay Creek is right next door and has plenty of less technical single track and double track paths.