The A 11 motorway links Paris to Rennes.
You can get there in 2 hours 45 minutes.
Saint-Malo is at a45 minutes drive by R.N. 137 (dual-carriageway).
Saint-Malo can also be reached by the Estuary Motorway
From Normany (Caen in 1 hour 45 minutes)
From South-West (Nantes in 2 hours).
The extreme West of Brittany (Brest) is only 2 hours away.
Brittany has a very developed network of dual-carriageways.
They're free. Take advantage of them !
Travelling Distance and time from major french and european cities

Bordeaux 511 km (317 miles) 5 hours
Brest 220 km (136 miles) 2 hours 30 minutes
Lille 538 km (334 miles) 5 hours 45 minutes
Marseilles 1152 km (716 miles) 10 hours 15 minutes
Nantes 190 km (118 miles) 2 hours
Paris 419 km (260 miles) 3 hours 30 minutes
Quimper 200 km (124) 2 hours 40 minutes
Rennes 73 km (45 miles) 45 minutes
Saint-Brieuc 75 km (47 miles) 1 hour
Strasbourg 901 km (560 miles) 8 hours
Toulouse 756 km (470 miles) 7 hours
Vannes 155 km (96 miles) 1h55

Berlin 1378 km (856 miles) 13 hours 50 minutes
Brussels 638 km (396 miles) 6 hours 50 minutes
Geneva 917 km (570 miles) 8 hours 10 minutes
London 618 km (384 miles) 7 hours 30 minutes
Luxembourg 783 km (486 miles) 7h15
Madrid 1231 km (765 miles) 12 hours
Rome 1782 km (1107 miles) 16 hours