Rivnuts from Homestead, PA on 1/5/2022 6:48:39 PM:
There is a vast wealth of information related to the C&O Towpath including this website, various blogs and YouTube channels with which to plan a trip. The Forum on this website has innumerable useful threads containing reviews of all sorts of aspects of the Towpath.
I've ridden the entire length of the Towpath (and the GAP) each of the last seven years. What type of information are you specifically looking for?