Rivnuts from Homestead,PA on 4/8/2021 6:08:45 PM:
In addition to the Dravo Cemetery/Landing campsite, you’ll find free trail side camping along the GAP at Cedar Creek Park, Round Bottom Camp and Stewart’s Crossing in Connellsville. No reservations are required but access to the Adirondack shelters is first come first serve. Of course you can always pitch a tent at any of them.
Of course, there are numerous free hiker/biker campsites along the C&O Towpath as well.