Access: on leaving Plonéour-Lanvern towards Plozévet, at the cemetery, turn left onto the D156 towards Tréguennec. Drive through the village and continue on the Route de Saint-Vio. Before the chapel, at a crossroads of small roads, turn right towards the sea via Route de Prad ar C'Hastel or Prat ar Hastel until you reach the imposing remains of the pebble crusher.
The car park is on the left.
(S/E) With your back to the car park, head north-west, passing between the remains of the pebble crusher used for the construction of the Atlantic Wall. Admire the frescoes that decorate it. At the end of the last building, go up the ramp on the left that leads to the beach, which you then descend.
(1) On the beach, turn left towards the south-east and begin a long walk of about 3 km. Pass afirst group of blockhouses that have rolled onto the beach, evidence of the advancing sea, and continue until you reach another group of blockhouses, also on the beach. These remains of the Atlantic Wall are a delight for graffiti artists.
Continue a little further, turning left towards a metal post near which you will find a bin for collecting rubbish washed up by the sea.
(2) Climb the dune via a sandy path and continue to the right, ignoring a yellow cross and taking care to follow the paths laid out to protect the dune. Please follow these instructions to preserve the dune environment. Look for three houses on your left and turn left towards them to find theGR® and PR® trails.
GR 34 (white and red) +PR® (yellow)
(3) Go around the houses on the right, continue along the gravel path that leads
access to these houses and arrive at a fork.
Off the marked trail
Leave theGR® andPR® trail, turn right and continue straight ahead until you reach a junction with a road. Turn right and follow this road for about 100 metres until you reach a signpost. On the right, you will see a sign for a crêpe bar.
GR 34 (White and Red) +PR® (Yellow)
(4) Turn left and follow this wide path lined with charcoal hedges. Pass a house (Kerfeunteun on the map), then leave the Vouden Lan property on your left and arrive at a large paved area, which is none other than the training area for a truck driver school
(5) Turn left off the road, walk along a field on your left and continue straight ahead towards a marshy area. Turn right, walk up a long avenue lined with spindle trees and you will reach a road closed by a barrier. Continue to the junction with a small road that branches off to the right.
(6) Continue along the road that crosses the pretty hamlet (thatched cottages and beautifully restored buildings). At the exit, continue along the road that comes in from the right and you will reach a three-way junction.
(7) Turn left at the three-way junction and continue straight ahead, after the last houses, on a farm track. You will come to a signpost and a discreet sign for "Chapelle Saint-Évy".
(8) Turn left onto a grassy path that descends towards the Chapelle Saint-Évy. Cross the footbridge, which has been extended to allow access across this marshy area, and you will arrive at the chapel with its adjoining fountain. Climb up the opposite side of the valley (there is a picnic table at the top).
(9) Turn left and follow the gently sloping path. Please note that this clay path, used by agricultural machinery, can have significant ruts, especially after rain.
(10) At the signpost for the Étang de Saint-Vio, ignore the path leading down to the lake and continue straight ahead to the Maison de Baie d'Audierne buildings, housed in the restored farmhouses of the hamlet of Saint-Vio.
N.B. The watchtower (bird observatory) shown on the IGN map is no longer in use: access is prohibited.
At the road, turn right to reach the Chapelle de Saint-Vio. Take the time to admire this small chapel, isolated in its enclosure surrounded by low stone walls, and pass by the Pierre de Saint-Vio, a cup-marked stele from the Iron Age (750 to 450 BC).
(11) Cross the road and continue along the grassy path that leads to the fountain and wash house.
(12) Cross a small stream via a footbridge to bypass a bird sanctuary and reach a T-junction. Turn right and continue towards the clearly visible crusher and car park (S/E).

We enjoyed this very different walk along the entire length of the route: beach, marshes, a few roads, footpaths. A very pleasant afternoon in the sunshine.