Where you heading in PA? I have a 5k that I am the organizer of this weekend or I would join. If you want to ride on some dirt in the south central part of the state, I would stop by Michaux State Forest. You can download the map on the DCNR website and it shows all the trails and dirt roads. If you want so real fun, head up above State College to the PA Wilds. Lots of twisty roads. It is getting near Elk breading time so keep your eyes open. I was just backpacking in Sproul State Forest and they just freshly paved rt 144. Still have to watch for the occasional gravel.