Your route out of St Malo rather depends on where you are going, as St Malo, nice as it is, is a bit like Dover, somewhere you go to when you are going somewhere else.
If you are heading west into Bretagne you may wish to cross the Rance on the D168, follow signs for the Airport and Ploubalay.
If you are going south or east we usually head from the ferry terminal towards St Servan. After about 5kms, look out for signs for the D2, direction St Melour. Once you’re on the D2 follow signs for Chateau Malo. This route, although a bit tricky to find, will take you up hill out of the town on a quiet lane where cyclists have priority. From Chateau Malo you can continue southeast towards Dol de Bretagne or bear south, in the general direction of Dinan on reasonably quiet roads.
There are dozens of camping sites in the area, including one at Parame actually in St Malo. Michelin guide ones can be found at La Richardais, near the airport, St Jouan, on the Rance and at St Pere near Chateauneuf. There’s a good one at Pleudihen on the way to Dinan.
Bon Route!