I'm not much on camping, so I'm not sure I'd ever ride the entire C&O in one trip. At this point, though, I've pedaled all but the first 12 miles of it in sections. I usually hop on the towpath, go 10-15 miles, and then turn around to make it a round trip of 20-30 miles. And I take a fair number of breaks along the way to enjoy the scenery (alright, I admit it, they're really rest breaks, but the scenery is a definite plus).