The route starts in the centre of Piriac, from the small car park at the end of the quay, heading south-west.
(S/E) Follow the shoreline along the beach or the nearest lanes, depending on the tide.
(1) Once you reach Pointe du Castelli, the coastal path is cut off due to landslides and now goes around the semaphore, a coastal surveillance point that is still in operation. The path then becomes passable again and runs along the coast, revealing a succession of small beaches and remarkable rocks, until you reach the cove and port of Lérat, a true haven of tranquillity.
(2) Continue along the coast, from where you can see the port of La Turballe and the road to a car park on the edge of the town. This is where the rural part of the route begins.
(3) Cross the road and take the signposted path opposite, then turn right onto a path that runs alongside the Étang de Brandu lake and a holiday centre.
(4) At the tarmac road, turn left onto Rue de la Fontaine, which curves to the right, then left again onto Rue de Praillane, which leads to the chapel of St-Sébastien.
(5) Cross the road and take the small path straight ahead that runs alongside a water park.
(6) At the end, turn left and follow the narrow road along the campsite, which disappears into the vegetation.
(7) Cross the Route de Guérande and continue along the path over the small bridge, then, in the village, continue to the right, go up to the crossroads and turn right again for 200 metres.
(8) Turn left onto Route du Terrasseau, which soon becomes a cycle path
(9) which continues as the Route de Tournemine. At the roundabout, take the Rue de la Tranchée opposite, then at the next crossroads
(10), continue straight ahead on the signposted lane that leads to Rue du Port. Continue left to reach the harbour master's office and continue to the harbour car park (S/E), our starting point.