Cannes - Grasse - Castellane section: Done this route a few times now on the way to the Grand Canyon. Excellent ride, with good visibilty on fast corners, made for Blades and R1's. Also known as Route Napoleon.
Spectacular drive over Pont de Normandie bridge from Le Havre. Take coast road past D Day beaches, Pegasus bridge etc., good hotel in Isigny[Hotel de France} courtyard parking, then main road to St.Mere Eglise. Useful bike shop Carentan on right as you enter from North.