Car park on Rue des Moguérou, 300 m from the town centre.
(S/E) From the north-west of the car park, take the narrow streets to Notre-Dame de Croaz Batz Church.
(1) Follow theGR® trail along Rue Édouard Corbière, then immediately right onto Place Georges Teissier, alongside the Roscoff biological station, to reach the Victor Lefranc promenade.
Follow this promenade to the Kerléna Clinic
(2) Turn right onto Rue Victor Hugo. Pass the thalassotherapy centre, continue on theGR® and then take Rue Marquise de Kergariou to the Gulf Stream hotel.
(3) Continue on theGR® trail, turning right onto Allée de Groa Rouz. At the end of the lane, turn left onto a small path that leads to the junction of Rue de la Baie and Route du Laber.
(4) Continue on theGR® along Route du Laber to Château du Laber.
(5) Turn right and continue to the end of the dyke.
(6) Turn left onto Rue Roch Ar Ruguel until you reach Allée des Chênes Verts. Turn right onto this road and walk alongside the Perharidy campsite on your left.
(7) Before descending to the beach, turn right at the top of the dune and continue to a blockhouse.
(8) Turn right to reach Route de Perharidy.
(9) Continue in the same direction on Route de Perharidy until you reach the road on the right leading to a car park.
Turn right and take the path on the left at the start of the car park. The path passes east of the Ildys Foundation (on the bay side) to the centre's car park.
(10) After the car park, beyond the Foundation, the circuit turns left onto a path (well marked and maintained in places) that goes around the tip of Pointe de Perharidy.
(10) Return via the same route to the Perharidy road.
(9) Take the Perharidy road and Rue Roch ar Ruguel to return to the end of the dyke
(6) Take the same route back to the Gulf Stream Hotel.
(3) Turn left onto Rue Marquise Kergariou, then take the third street on the right, Allée de Roscogoz. At the beginning of the residential area, take a path on the left to reach Allée de Touliguin. Move to the right and immediately take a path on the left which leads to Rue du Docteur Bagot at the end of Rue de Bir Hakem.
(11) Turn left, then take Rue Toulliguin on the right until you reach Rue Albert de Mun and finally Rue Célestin Seite opposite, to return to the car park where you started (S/E).

