Lin from cumberland, md on 8/9/2016 6:37:11 AM:
The most recent C&O Canal Trail Guide has a folded map tucked into the back of it. Maybe if you called one of the visitors centers or a bike shop that is near GAP or C&O you can do a phone purchase? It is a nice trail guide containing info about the towns/amenities along the way. And the proceeds go to the trail as far as I know. Hope you have a great trip.