Park at the Maison du Littoral car park (Ecomuseum on IGN), just west of Pointe de Trévignon.
(S/E) From the car park, head west, pass to the right of the Maison du Littoral and continue to the first path leading to the beach. Turn left (blockhouse on your right) and walk to the top of Trévignon Beach. Turn left and follow the narrow path at the top of the dune (a little less easy to walk on in the sand) and continue to the second access point to leave the seafront. Please note that the path continues but, at the end of the beach, a wide stream blocks the way and prevents you from continuing.
(1) Descend to the left along a protected natural area managed by the Conservatoire du Littoral and you will come to the edge of the road.
GR® 34 Marked in white and red
Follow this road to the right via the passageway on the right, cross a bridge and arrive at the "Pointe de Trévignon" sign.
(2) Go up to the right, pass a car park and continue along this coastal path, which offers beautiful views of the coast to the west. You will arrive near a large wash house, which is unfortunately poorly maintained.
(3) Go up to the right and continue towards the small port of Trévignon.
No signposts
(4) Descend to the right towards the harbour fish market: note the lifeboat shelter and its launch ramp and the small lighthouse that marks the entrance to the harbour. At the end of the quay, continue along a cement strip and climb back up to the car park. Leave the extreme point with an old fort and a castle (private) on your right.
GR® 34 Marked in white and red
Go around another car park and continue along the coastal path, which runs more or less parallel to the Route de la Corniche. Pass a orientation table slightly to the right and continue along the rocky coast towards Trez Cao Beach. Climb up alongside a large pool fed by a stream.
(5) Walk along this beach and continue along the path on the dune. Go around Don Beach and turn right towards the rocky point of Kerjean where you will find a bench: viewpoint over the beaches you have just walked around.
(6) Continue along the eastern side of this point , from where you can see the following beaches as well as Raguénez Island, accessible at low tide, and further out to sea, the uninhabited Île Verte and an old seamark. Arrive at the beach car park and cross it.
PR® marked in yellow by signposts
(7) Leave the coast and the GR®34, cross the Route de la Corniche with caution and enter Impasse Hent Pont Bihan. Walk along the left-hand side of the private land where mobile homes are permanently installed. At the three-way junction, turn right, then left. Continue along this path, the left-hand side of which has been converted into a gravel footpath to avoid the muddy lower part of the path in winter. Leave the hamlet of Kersidan on your right, cross a stream via a footbridge and begin a short climb through a wooded area. You will arrive at a crossroads.
(8) Turn left, take a narrow path surrounded by low stone walls and continue along a farm track between fields. Pass a crossroads and you will come to a road.
(9) Turn right, cross the road at the end and come out behind the Saint-Philibert Chapel. Walk along the left side of the building and descend towards the fountain, a lovely spot for a break (benches).
(10) Walk back up towards the chapel, note the two protohistoric steles in front of the church and follow the road uphill via the safe passage on the left. Look out for an old bread oven dating from 1763 near a large campsite and continue to a pedestrian crossing.
(11) Cross the road and head slightly to the right towards the campsite entrance. Turn left, cross an esplanade with a small shrubbery in the middle and arrive at Route de Trévignon (D1). Cross it carefully and follow it to the right for less than a hundred metres.
(12) Turn left onto Route de Kerléo and walk along large grassy fields. Before a crossroads, look for a discreet trailhead on the left. If you reach a road on the right, you have gone too far: turn back.
(13) Turn onto this path which descends into the woods towards a stream that you cross on fallen logs (local granite). Climb back up and you will come to a small road which you follow to the right.
(14) Turn left into Impasse Gwaremm Marguerite and continue along the path that leads to the hamlet of Kerlin, which has a few typical 18th and 14th century houses in Trégunc.
(15) Cross the road at the pedestrian crossing, turn into the cul-de-sac opposite and continue along the path that leads to the car park of the Maison du Littoral (S/E).