If I had 5 days starting from Rennes I would probably head west instead and get the boat back from St Malo, but I am biased. I think the terrain is a bit more interesting than a lot of Normandy and up to Calais, with the exception of the bit around Etretat.
Equally, everywhere along the coast will be pretty busy in August so you might be better off sticking a bit inland.
Yeah the municipal campsites are a good shout.
If I had 5 days starting from Rennes I would probably head west instead and get the boat back from St Malo, but I am biased. I think the terrain is a bit more interesting than a lot of Normandy and up to Calais, with the exception of the bit around Etretat.
Equally, everywhere along the coast will be pretty busy in August so you might be better off sticking a bit inland.