Originally Posted by
Slo-go'en
I haven't hiked the ADT, but I did do a bunch of research and bought all the guide books, something you apparently didn't do and should have. If you had, you'd not be asking these questions. Anyway --
The data books available from the American Discovery Trail Society have GPS way points listed. I don't know if they are down loadable from thier web site or not. Having to enter them all by hand would be a chore. If you watched any of Lion King's videos about hiking the ADT, he spends a lot of time complaining about getting lost. Even with the guide books, keeping track of the route can be difficult.
As for camping, 90% of the route is a road walk, so for the most part, you'll just have to find a spot off the road or ask permision to camp in peoples yards. There are very few actual, designated camp sites along the ADT. Other then the occasional commercial RV camp ground, most of the actual campsites will be on the C+O canal and along the Buckeye trail in Ohio.