Chuck Keiper trail in North Central Pennsylvania is a great place to check your fitness level. There are lots of climbs and most of them are really steep. You will know at the end of a trip here if you need to start doing harder trails. There are 2 loops East and West and we have done them both. If you want to get away from other hikers this is the place to be. We usually don’t see other hikers here, maybe they are smarter than us. Here is a great description of the trail in PA Hikes:
https://pahikes.com/blogs/chuck-keiper-trail
We completed the east loop 3 times and the west loop once. The west loop is 33 miles and we took 2 days to complete, the first day was 20 miles, maybe that is why we only did it once.
EAST LOOP
WEST LOOP
2013 KEIPER EAST
HAPPY TRAILS, STEVE