Park in the Phare de la Coubre car park. It is best to start the walk at low tide or just after low tide, as the beach may be submerged at high tide.
No signposts
(S/E) From the car park, look up to locate the top of the lighthouse, head towards it, then follow a path to the beach on the right, leaving the lighthouse on your left. Reach the beach.
(1) Follow it to the left towards Pointe de la Coubre for about 2 km. Then, look carefully for a place where the dune at the top of the beach is lower. The Visorando app is useful here for following the trail.
(2) Go back up to the top of the beach, then cross the dune ridge, taking care to walk on the sand and not on the vegetation. Continue straight ahead until you reach the boundary between the dune and the floodplain of the cove. Look for a path in the sand of the dune that leads off to the left.
(3) Follow this path, keeping to the exact boundary between the dune and the marsh. This will take you back to the lighthouse site.
(4) When you reach a fence, a bicycle parking area and an information panel about the lighthouse, turn left to reach the beach. Follow the beach to the right, passing directly in front of the lighthouse, then take the access path you used on the way there.
(1) Continue straight ahead on the beach for 3.8 km.
(5) Go up to the top of the beach at an access point from a car park. The Visorando app is useful for locating this spot, as there are no landmarks, except perhaps a larger number of people on the beach. Go up the access road to the car park, then turn onto a path on the right before reaching the tarmac and the car park. About 150 m further on, join the cycle path and follow it to the right for a few metres.
(6) Then turn onto a path on the right. Immediately afterwards, a sign indicates that this is Chemin du Barrachois. Go straight ahead at the next two intersections.
(7) At the third intersection, first turn left then right and immediately pass to the right of a small pond. Continue straight ahead at the next intersection, then straight ahead again at the next intersection with Line 40 (sign). At the next intersection, first turn right then left, following the orange markings, onto a path that is not shown on the IGN map. At the next intersection, follow the orange markings again, turning left (ignore the path that goes straight ahead). You will soon reach the cycle path.
(8) Follow it to the right. About 700 m further on, you will arrive at a car park frequented by surfers, where there is a water tap.
(9) Leave the cycle path by turning right to reach the beach. Follow it to the left until you reach the access road to the lighthouse car park.
(1) Go up the access road on the left to return to the car park (S/E).