45 minutes from my house is a state park called "hickory run" - it is a really large flat and level boulder field(two of them actually) where one can enjoy the wonderous provisions of nature in complimenting your practice... it's an awesome spot to practice running - the route is plotted out one step at a time, several steps ahead of time... it's great fun and a killer adjective to any practice.
http://www.dcnr.state.pa.us/statepar...ickoryrun.aspx