The starting point is at Le Diben, in Plougasnou. At Le Diben, head towards the port and, at the top of the hill, turn right onto Rue des Forces Françaises Libres, which leads down to a car park and a service area for motorhomes.
The first half of the route, along the coast, follows theGR®34trail. Follow theGR® markings.
(S/E) Take the coastal path that heads north-west, 50 m before the service area. Follow theGR® which rejoins the Port de Diben, then heads west again. Pass the Port Blanc beach.
(1) At Pointe Annalousten with its beautiful panorama, continue along the path which then heads south. Pass Guerzit Beach.
(2) After Pointe de Perhérel, pass Saint-Samson Beach. At the hotel residence near the beach, you can cross the beach and rejoin the trail immediately afterwards on the left.
(3) Further on at Pointe de Saint-Samson, the coastal path is a little rough. You can avoid the point by turning left before the pine grove. From this point, you can see the houses of Pointe de Térénez to the south. Continue along the path towards Térénez.
About halfway between Pointe de Saint-Samson and Térénez, a path branches off to the left between two fields. The path is bordered by embankments and climbs eastwards towards the hamlet of Cosquer (altitude 10).
Please note: make sure you spot the start of this path, which is surrounded by tall ferns depending on the season.
(4) Leave the coastal path and take the path on the left that climbs up to Le Cosquer. (TheGR® markings end at this point).
The path quickly becomes a sunken lane.
After the first houses in Le Cosquer, you will see the façade of the Manoir du Cosquer on your right. Join the road and turn right to reach the main entrance of the manor house.
(5) At the manor entrance, turn left onto the gravel road between the fields, which joins the Kervébel asphalt road 300 metres further on. At the T-junction, turn left towards the hamlet of Porspoën.
Further on, the road curves sharply to the right and heads east. At the houses in Porspoën, just before a bend in the road to the left, you will come to a Y-junction with a farm track on the right (with recycling bins).
(6) At this junction in Porspoën, take the track on the right that runs between the fields. At the next junction, turn right for 20 metres, then left to continue towards the houses of La Villeneuve - Kernevez. Note the beautiful granite cross on the left of the road. You will reach the crossroads at the houses of La Villeneuve - Kernevez, with a farm track starting on the left at the farm.
(7) Take the farm track on the left heading north-east. At the next junction, continue left. You will then come to the Kerangroaz crossroads (calvary on the right). Turn right and follow the road for 350 m until you reach another crossroads where a road branches off to the right and a farm track to the left, towards Kericuff. (altitude 56).
(8) At the Kericuff crossroads, turn left onto the farm track that climbs north-west between the trees.
Further on, after a steep descent, the track joins the Milin Névez farm on the right. Do not enter the farm, but immediately turn left onto the farm track ahead.
After 150 m, halfway up the slope, before reaching the plateau, a path branches off to the right before the crops. Please note: look carefully for the start of the path, which is sometimes hidden by ferns.
(9) Take the path on the right, which gradually descends into the undergrowth. It overlooks a first mill on the right, then heads north to arrive opposite the main entrance to the Manoir de Tromelin.
(10) Go around Tromelin Manor on the right and further on join the departmental road (D46a2) which leads to Le Diben.
Follow it to the left and walk along Anse du Diben.
(11) At Le Diben, after the first houses on the right, turn right onto a path that leads to the cove and allows you to climb up on the left into the narrow streets that lead to the service area (S/E).

Without GPS, it's not always easy; you can get lost. Other routes are not maintained; the ideal solution is signposting.