I touched down at Charles de Gaulle airport at the end of April, got a bus into Paris and started walking from there (France 1). Over the next few days I explored Paris, and then travelled, by Bla Bla Car, to Normandy to visit the creators of Tsubook (a Shiatsu mobile application).
From Agon-Countainville, I walked along the randonnée GR223 (known as “Sentier des Dounaniers”) to Regnéville, Saint Martin de Bréhal, Granville (where I stayed an extra day), Genêts, Mont Saint-Michel, Bas-Courtils, then inland to Pontorson along the Couesnon river, and from La Bernerie-en-Retz to Porte Pornic (return) around the coast of Brittany.
Bla Bla Car (France) where you can be driven by someone who is already making that journey and advertises through this website for others to join them. Cheaper than bus/train and usually very sociable. Also safe and mostly reliable. Web link
“Sentier des Douaniers” GR223, La Manche tourism