Mine, so far, is The Susquehannock Trail System (STS) in Potter County, north central PA.
It's an 82 mile, orange-blazed loop through some of the most beautiful mountains in Pennsylvania. The volunteer group maintaining the trail sells a map kit & trail guide book that is well worth the $10. You'll get the best campsites marked on the 3 topo maps and lots of mile by mile trail history and geology in the guide book.
At some STS vistas you can see no sign of human habitation in any direction. Just miles and miles of Penn's Woods (the English translation for Pennsylvania).
Begin traditionally at 12:00 at Denton Hill State Park ranger station. Leave your car at the parking lot. There is a 1/4 mile trail to the loop. Most people hike counter clockwise.
At about 5:30 on the loop there is a small town where you can send your last 3 day's food c/o general delivery to the postoffice, to lighten your load. Just like on the AT, PCT, etc.
I like this trail better than most sections of the AT. I love hiking it alone since it's not crowded like the AT. Plus you can camp just about anywhere you like. Plenty of small streams for water.
And it's a trail SYSTEM, made up by connecting sections of other trails. So you can do side trips on another trail, say The Black Forest Trail, to lengthen your trip. Or, you can bushwhack and cut across the loop to shorten it – if your map and compass/GPS skills are up to it.
If you like native trout fishing you can stop on a large creek at about the 8:00 part of the loop – if you've got your rod and license. It's a famous trout stream in PA.
OK, now what's your favorite trail?
