Starting point and access:
Suscinio beach car park. From the D198, between Sarzeau and Penvins, follow signs for Château de Suscinio. Drive past the castle entrance and, immediately afterwards, turn left towards Landrezac. Then take the first right towards the beach: the car park is at the very end of the road.
Yellow + Red and White markings + directional signs
(S/E) Head west and cross the car park. Continue along a path running alongside the marshes on your right, with the sea a short distance away on your left. A low fence on the left indicates that you must not tread on the dune, which is fragile.
(1) At the first junction, ignore the turn-off to the right onto the Sentier des Marais and continue west-south-west along the often sandy path.
(2) Pass a small car park on your right, go through a forest gate and continue along a path lined with private property fences on your right. After a shaded section, ignore another small car park on your right and walk alongside a property wall on your left.
(3) At the end of the track, turn right and walk along the beach on a wooden boardwalk designed to protect the dune. At the end of the boardwalk, continue along a track with property fences on the right-hand side. Pass through a forest gate and emerge onto a small road.
(4) Follow the road to the left, cross a car park and continue along the path. Pass a chicane and continue along a fenced-off path with tall cypress trees on the right. Take another wooden jetty and, at the end, rejoin the tarmac road.
Yellow markings + directional signs
(5) Then turn right towards Kergorange (let theGR®®34continue straight on). Follow a wide path through a pine forest, bordered by a fence on the right-hand side. After skirting a field on the left, you’ll come out onto a small road and follow it to the right. Walk through the hamlet of Lan Hoëdic, ignoring the side streets.
(6) At the fork in the road on leaving the hamlet, turn left (the path on the right leads to the campsite). Enter Kergorange and, at the three-way junction, turn right. Immediately ignore a dead-end on the right and, at the ‘give way’ sign, turn right towards Sarzeau-Centre. It is best to walk down the pavement on the left, passing two dead-ends in turn, first on the left then on the right.
(7) At the next junction, turn right onto Impasse Victor Hugo towards Château de Suscinio. At the crossroads, continue straight ahead. After a sewage treatment plant on the left, the tarmac gives way to a track. Follow this wide track south-east until it ends (wet patches).
(8) At the entrance to the hamlet of Sodrio, follow a road to the left, still heading towards the castle. At the Fork in the road that appears shortly afterwards, turn right.
(9) Ignore the start of the Sentier des Marais on the right and continue due east along the quiet little road. As you approach the castle and the marsh, turn left onto this road and you’ll reach a junction. Then turn left towards the castle.
No signposting
(10) Once you reach the foot of the castle, begin your walk around it by turning left onto a hard-packed track. Join the tarmac road, follow it to the right and walk past the castle entrance.
Yellow markings + directional signs
(10) Continue straight on for a few dozen metres, then turn left towards Landrezac. Take the first right towards the beach and, at the end of this road, you’ll reach the car park (S/E).
Obstacle: just after point 5, once you've turned right and entered the pine forest, 3 large trees have fallen and are blocking the path. I climbed them
(but that's just me and my physical condition!!). It might be possible to go round them to the left but it's marshy. Possibility to be checked.