Boy is that contradictory - “the main trail is about 5 miles from here in numerous directions”.
It looks like it crosses between the Carlisle and Harrisburg Exits, but I don’t ever remember seeing a sign or marking. We have spent a life time close to the trail in our explorations. It is very intriguing, much like the Goshen or the Cumberland, but most of those seem to have more history than this “Mother Earth”, back to nature, path. But it sure is interesting.