Park opposite the casino at 800 Boulevard du Général Sizaire. Parking is paid along the entire boulevard during the summer season.
(S/E) Cross Boulevard Sizaire to reach the pebbles and turn right: in summer, a wooden walkway is laid down to make it easier to walk on the pebbles in front of the cabins. Continue straight ahead after the last concrete groyne and you will reach the sandy area.
(1) Follow the yellow markings of the coastal path opposite, which winds its way through the shrubs in the small dunes for about 1,200 metres. At the junction with a large stony path, leave the coastal path on your left and turn right onto the wide avenue: you will see the Cayeux lighthouse.
(2) Turn left onto Avenue du Commandant Yves Masset, then right onto Avenue Parmentier a few dozen metres further on. At the crossroads, turn left onto Avenue Guillaume le Conquérant towards Brighton Woods. Stay on the avenue for 300 metres, with the Bois de Pin campsite on your left. Continue past the barrier.
(3) Take the path on the left that enters Brighton Woods. At the intersection, turn left (green marker). After 100 metres, turn right, leaving the small path that runs behind the houses. At the next crossroads, turn right and after 30 metres, turn left. At the next intersection, turn left and you will come to a clearing with benches. Take the path on your right and continue straight ahead to leave the woods and come out onto Rue Faidherbe.
(4) Follow the street to the right, passing the Les Mollières car park on your left and the campsite of the same name on your right. Turn right after the tennis court onto Rue du Camp des Anglais. Take the first left, Allée des Garennes, and continue to the end, where the path narrows. At the intersection with Rue Faidherbe, turn right and continue to the Notre-Dame Chapel.
(5) Turn left towards the ponds. Go around the pond on the right. At the crossroads, take the path that goes to the right.
After 300 metres, turn left. The path leads to the D3. Continue and after 80 metres, leave the D3 and follow the path on the left.
(6) Follow the path that runs alongside and follows the ponds on the right, then heads east at the factory before joining the D102 at Le Hourdel.
(7) Turn left to go to the lighthouse along the cycle path.
(8) At the lighthouse, you are at low tide ; otherwise, take the alternative route described in the Practical Information section. Walk down to the sand, take off your hiking boots and follow the coastline on the left to return to Cayeux. Do not venture too far if you are not familiar with the tide times, as the sea rises very quickly even if it seems far away.
(9) Pass in front of the blockhouse planted in the sand, where seals often bask on the sandbanks offshore. Continue along the foreshore. When you reach Cayeux, climb up the pebble beach at the sixth concrete groyne and rejoin the boardwalk. At the casino, return to your car (S/E).