I am finding it very difficult to try and find a good place to mountain bike around here. I know out in Missouri where i used to do a lot of biking at a state park was great, but around here it seems like all state parks have maybe one bike trail and the hundreds of miles of other trail are closed to bikers. Anyone know of any good places to go I'm dying here. Thanks guys.

Can you be a little more specific than just 'south eastern pa'?

well I mean I live in Chester County, but I don't mind driving a good bit if it means good trails

there are lots of trails in central PA. Im in lewisburg for about half the year but all around here is sweet singletrack.