Starting point: Around the Place de l’Église in Port-Launay.
(S/E) With your back to the Place de l’Église, head towards the war memorial then turn right onto Quai Amiral Douguet, along the banks of the River Aulne, which continues as Quai Louis Hais.
(1) Just before the viaduct, by a large white building, turn right onto a grassy path, go under a chain and continue along a track that climbs into the woods. Follow this long, steady climb until you reach a small road.
(2) Turn left and continue uphill. At the first three-way junction, veer left to pass through the village of Lanvaïdic, where you’ll find the small 17th-century Saint-Aubin Chapel.
(3) Continue along a stony path which descends towards a stream and then turns left. It climbs steadily and joins a small country road.
(4) Opposite a house with wooden shutters, turn left onto the road overlooking the Quimper–Landerneau railway line at Pont Saint-Sébastien. After the bridge, turn right and follow this road. Walk past the greenhouses of the Kergadalen Agricultural Training Centre on your right.
(5) Carry on straight ahead at the crossroads with a carved cross and continue on to the hamlet of Saint-Sébastien and its beautiful 16th-century chapel (an ideal spot for a break). Take a short detour to the modest fountain situated about 100 metres further down
(6) Continue downhill: pass the farms at Le Rest and Rozavel, and the Lézaon equestrian centre.
(7) After a solitary conifer on the right, turn right onto a path between the fields and head towards the banks of the Aulne.
(8) Turn left at the gate and follow the path through the reedbed. It leads to the Guily-Glas maritime lock.
(9) Continue along the Aulne, passing under the viaduct, and follow the route taken on the way out to reach the church square (S/E).