Muzillac / Arzal

Riding off from Muzillac, you head for the town of Billiers, dominated by its curious steeple that doubles as a lighthouse. Next, La Littorale cycle route guides you along the banks of the Vilaine Estuary, via roads full of slopes; the reward for your physical exertions are some wonderful views down on the river. You also ride through traditional villages offering wonderful displays of typical rural Breton architecture. Reaching the Barrage d'Arzal, you can admire up close the technical prowess of this engineering structure, the largest estuary dam in Europe.

The cycle route

From Muzillac, you ride along a cycle path running beside the D5 road up to Billiers. After that, it’s 12km along little parish roads, taking you as far as Arzal and its dam across the Vilaine Estuary. 

Don't miss

• Muzillac : Pen Mur natural site, centred around a beautiful lake with an old mill.
• Billiers: the town dominated by its church, with a steeple that doubles as a lighthouse, plus the little old fishermen’s cottages.  
• Arzal: Europe’s longest estuary dam, measuring 500m across, separating the Vilaine River from the Atlantic, but with a movable lock bridge enabling boats to pass from estuary to open sea; the village of Bourgerelle with its traditional thatched houses; beautiful views down on the Vilaine River and its estuary from the cycle route. 

Nearby:

• Lantiern: a traditional Breton village boasting remarkable 16th- and 17th-century houses; the Chapelle de Lantiern, founded by the Knights Templar in medieval times. 
• Billiers: the Pointe de Pen Lan Headland and the little port opposite the Vilaine Estuary.