Paul A on 1/21/2015 12:01:00 AM:
Like someone else said, order the trail book.
I hiked both the C+O and GAP and camped all along the way. On the C+O it's no problem at all to camp with the hiker/biker campgrounds about every 5 miles. Only the first day was a long one. There are campsites along the GAP too, just not as many. I did stealth camp one time on the GAP well away from the trail, well out of sight and sound of the trail. There's no need to sleep indoors unless you want to. A small tent, a sleeping bag appropriate for the time of year, and a few odds and ends are all you really need.