Park your car near the port of Comberge in Tharon Plage, in the commune of Saint Michel Chef Chef.
Take the Aléop bus no. 315 (Saint-Nazaire - Saint-Brévin - Pornic) from the Port de Comberge stop near the port, on the sea side.
Get off at the Pornic Sainte Marie Place de Verdun stop.
(S) Take Rue Charles de Foucault, Rue Jean Bart and then Rue des Roses to reach the sea.
(1) Turn right and follow the coastal path. This path is marked (GRP® de Retz), mostly wide and well maintained.
The route is dotted with small coves with a small beach surrounded by rocks, which are ideal for swimming if the weather and water temperature allow. Reach Préfailles.
(2) Pass by an old iron spring that once attracted many spa visitors.
Then head to the protected site of Pointe Saint Gildas.
(3) Head back towards Tharon Plage, first walking along the port of Pointe Saint Gildas, then taking the first path on the left after a sort of petrol station that was never completed.
Follow the coastal path all the way to Port Giraud.
(4) Here, houses built close to the sea force you to return to the road, a little inland. At the port itself, when the tide is low enough, it is possible to walk along the beach to Tharon.
(5) Continue along the beach and you will easily find the car park at the port of Comberge (E).