The southern tip of the Île d'Oléron, starting from Saint-Trojan

A circular walk that takes you from the village of Saint-Trojan to explore the national forest, the wild Atlantic coast with the impressive Maumusson channel, and Gatseau Bay. A complete panorama to discover this southern tip of the Île d’Oléron, far from the cars and crowds on the beaches.
Please note: To walk easily on the hard sand between (4) and (5), you must check the tide times (see the Practical Information section)

Details

1871749
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  • Walking
    Activity: Walking
  • ↔
    Distance: 10.15 mi
  • ◔
    Average duration: 4h 45 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 79 ft
  • ↘
    Descent: - 79 ft

  • ▲
    Highest point: 89 ft
  • ▼
    Lowest point: 7 ft

Photos

Description of the walk

Park in the car park in the centre of the village opposite the Saint-Trojan market.

(S/E) Cross Boulevard de la Plage and walk past the modern market hall. Head towards the church and turn left onto Rue de la République. Walk past the church (noteworthy ex-voto in the form of a model boat) and turn into the first street on the right, Rue de Maumusson.
Cross Rue Omer Charlet and climb the five steps opposite. Continue straight on to the terminus of the Saint-Trojan tourist train.
Turn right onto the path that leads into the forest, passing the station buffet.
Further on, turn left onto the sandy track and follow it for about a hundred metres.
At the first fork in the road, take the narrower path on the right and then right again. Follow the path until you reach a stony track; this is the Soulasserie track. Take it to the right for a few metres to quickly reach another junction.

(1) Turn left onto a narrow path that leads into the forest.
Then head left onto a path that leads straight up a dune in the forest. The climb is steep but very short.
Follow this faint path which winds through the broom and holly growing beneath the pines.
When you reach a wider path, cross it and continue straight ahead onto a wider path with a sandy surface. You’ll reach a wide stony track; this is a DCIF track: Defence Against Forest Fires.

(2) Turn left onto this stony track.
At the barriers, continue straight ahead, ignoring the path on the right leading to the forest house (dead-end path, no pedestrians allowed). Shortly afterwards, you’ll come to a sandy path.

(3) Turn right onto this wide path; you will see a sign hanging quite high up on a tree indicating that it is off-limits to horse riders. This is the Passe des Bris. Continue straight ahead on this path, ignoring the turn-offs to the left and right.
Further on, cross the track called Boulevard Bonneau (no danger from cars), which cuts across the path at right angles.
Continue straight ahead for a few metres to reach the back of the dune, where the ground becomes softer sand.

(4) Cross the dune without straying from the main path so as not to damage the dune, which protects the forest from the onslaught of the ocean.
Head down to the beach and turn left towards the south. Continue along this beach until you reach the wooden fences in the distance, which surround the terminus station of the little train.

(5) Climb up the dune, go round the tracks to the left and take the path on the left, very close to the back of the dune, which leads down into the forest. The path is marked with blue dots on the trees.
Ignore the blue and red markings that head off to the left and continue straight on.
You’ll come to a path running perpendicular to the one you’re on. Turn right.
Continue straight on, following the orange markings. Ignore a wide path that branches off to the left under the cypress trees.
The path narrows and, as the sea comes into view, joins the coast opposite Gatseau Bay. Take a moment to enjoy the scenery here.

(6) Turn left, following the route of the narrow-gauge railway whilst keeping your distance from the tracks. Pass a standing stone which marks the memorial to the landing on the Île d’Oléron in April 1945.
Pass the memorial; do not follow the coast but continue under the pine trees towards the wooden building, which is a stop on the narrow-gauge railway line. Continue straight on to reach the car park at Gatseau beach.
Head towards the car park entrance. Walk past the entrance to the Ibis hotel and turn right onto the path that runs alongside the hotel’s fence.
At the end of the path, you will reach Plage du Soleil.

(7) Turn left and follow the path. Continue straight on along the Pacaud sea wall, which is a tarmac path.

(8) Before the end of the dyke, turn left onto the dirt track signposted ‘Marais des Bris’, then immediately right down to cross the wooden bridge. Turn left immediately after the bridge to cross a second bridge.
Take a third bridge on the left, then follow the path to cross the marsh canals via a fourth, fifth and sixth bridge.
Walk past the Maison du Marais, with a playground on your left, and take the white path opposite. Cross Boulevard de Gatseau. Continue along the track opposite, which runs alongside a ditch on the right.

(9) Cross this ditch via the first small wooden footbridge and walk between the gardens and houses to reach Rue Surcouf. Turn right to reach Allée des Martinets.
When you reach an open area where the road widens and is lined with trees, take the path on the left which starts to the right of a white boundary wall belonging to the villa called Vent Sud. Enter the woods, ignoring a path on the right.
You’ll come to a tarmac cycle path; follow it to the left for a few metres.
Take the first sandy path on the right. After the fitness trail, continue straight on along a narrower path and head down to Boulevard Aristide Briand. Turn right, then left into Rue Cacaly.
At the end of the street, turn left then right onto Avenue Henri Massé to reach the promenade running alongside the small beach.

(10) Turn left towards the village. Pass by the seaside villas of Saint-Trojan and enjoy the view of the Oléron viaduct here.
At the end of the promenade, continue right along the gravel path on the sea wall.
When you have the church on your left, go down the wooden steps to return to the starting point (S/E) by crossing the marsh via the path.

Waypoints

  1. S/E : mi 0 - alt. 10 ft - Car park opposite the market in Saint-Trojean
  2. 1 : mi 0.74 - alt. 46 ft - La Soulasserie Trail
  3. 2 : mi 1.52 - alt. 20 ft - DCIF trail
  4. 3 : mi 2.18 - alt. 30 ft - Start of the Passe des Bris
  5. 4 : mi 3.08 - alt. 20 ft - Wild Coast Beach
  6. 5 : mi 5.01 - alt. 23 ft - Terminus of the Saint-Trojan narrow-gauge railway
  7. 6 : mi 5.87 - alt. 10 ft - Gatseau Bay
  8. 7 : mi 6.67 - alt. 20 ft - Sun Beach
  9. 8 : mi 7.56 - alt. 13 ft - Entrance to the Bris Marsh
  10. 9 : mi 8.12 - alt. 7 ft - Wooden footbridge
  11. 10 : mi 9.3 - alt. 16 ft - The small beach
  12. S/E : mi 10.15 - alt. 10 ft - Car park opposite the market in Saint-Trojean

Notes

Please note: (Between 4 and 5) You will be walking on hard sand on the beach. You should plan to walk this section between 3 hours before and 3 hours after low tide, regardless of the tidal range. At high tide with a small tidal range, you will have to walk through soft sand, which is difficult, and with a large tidal range you will not be able to pass, as the water reaches the foot of the dunes.
Tide times
Swimming is dangerous and not recommended on the main beach. There have been several drownings in recent years.

Please respect the dunes.
Toilets at Gatseau beach.
The difficulty is rated as moderate due to the length of the route, but there is very little elevation gain.

This route passes through a protected area, which may be subject to special regulations:

Worth a visit

(5) You are now facing the Maumusson strait, a spot accessible only on foot (or by the little train). This is the narrowest point between the island and the mainland; the current is very strong here and, if the wind is blowing, you’ll see some magnificent waves breaking. Swimming is strongly discouraged in this very wild area.
(5) If you wish, you can walk all the way round the tip of the island by continuing along the beach past the little train’s terminus. This will extend the walk.
(5) Facing the Maumusson channel, you can see the effects of the ocean’s relentless pounding on the dune. Here, the coastline can recede by several dozen metres a year. The tracks of the little train are very often shortened.
(Between 7 and 8) Walk past the buildings that originally formed the American seaplane base during the period 1917–1918. The two long slipways that can be seen were the slipways of this base. These buildings now house a secondary school (CEPMO) and a care home for adults with severe disabilities.

Reviews and comments

4.1 / 5
Based on 18 reviews

Reliability of the description
3.9 / 5
Ease of following the route
3.7 / 5
Route interest
4.8 / 5
Diégo17
Diégo17

Overall rating : 4 / 5

Date of your route : Nov 17, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

Hello,

A very beautiful hike that combines land and sea.
However, the signposting needs to be reviewed as the route is sometimes very difficult to follow.
Without the Visiorando app, it would be very, very complicated.

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phbizet
phbizet

Overall rating : 4 / 5

Date of your route : Nov 10, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : Yes

Combine this route with another to extend the enjoyment and duration of your walk.
Problem following the route from the St Trojan marsh.

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lojp17
lojp17

Overall rating : 4 / 5

Date of your route : Sep 28, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★★ Very good
Very busy route : No

A very pleasant walk through the forest, along the beach and the sea wall on the way back
Thank you for this beautiful route.

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Pierrot680
Pierrot680

Overall rating : 4 / 5

Date of your route : Aug 26, 2025
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Easy to follow the route thanks to the GPX track download

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Moreau Carole
Moreau Carole

Great, fantastic! Walk taken on 20 October 2024, but be careful: stage (8) Before the end of the dyke, turn left onto the dirt track indicated by the sign for Marais des Bris, then immediately turn right and go down to cross the wooden bridge. Turn left immediately after the bridge to cross a second bridge. The first wooden bridge no longer exists!

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Hervé A
Hervé A

Overall rating : 5 / 5

Date of your route : Sep 25, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very beautiful walk, combining beach (Maumusson, with its rough sea), seaside (Saint-Trojan), and a very beautiful forest. Some very beautiful places to discover.

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JimmyAce
JimmyAce

Overall rating : 4.3 / 5

Date of your route : Oct 03, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

Very nice walk, but a bit too many mosquitoes in the undergrowth, so bring mosquito repellent!
Couldn't find the path after point 8, so we stayed on the dyke and rejoined the route further on. Same for point 9 – be careful not to miss it

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jacques.A
jacques.A

Overall rating : 3 / 5

Date of your route : Sep 05, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★☆☆☆☆ Very disappointing
Route interest : ★★★★☆ Good
Very busy route : No

no reliable markings

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NaDiA14
NaDiA14
• Edited:

Overall rating : 3.3 / 5

Date of your route : Apr 24, 2023
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

We did part of the route from the St Trojean Beach Boulevard car park (coastal route)... Marais (detour due to the absence of the footbridge) to Gatseau beach... Return via the same route.
Not many people out and about today during the school holidays.

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Dan-R1
Dan-R1

Overall rating : 3.3 / 5

Date of your route : Nov 13, 2022
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★☆☆ Average
Route interest : ★★★★☆ Good
Very busy route : No

The route is interesting and varied (forest, ocean, straits, marshes) but quite difficult to follow, particularly at point no. 1 where there are no tangible landmarks that can be used in the description and where wild boar trampling makes it difficult to find the "rough track". It is perfectly possible to reach the DCIF trail via a quieter path covering the same distance. In any case, provided you have a GPS, this hike is very enjoyable.

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eriba-17
eriba-17

Overall rating : 5 / 5

Date of your route : Sep 16, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

I am the person who created the hike. I retraced the route yesterday.
PLEASE NOTE: after point 8, it is no longer possible to take the wooden footbridge that leads to the Bris marsh. It no longer exists.
This area has been transformed into a storage area for horses belonging to the neighbouring riding club. This has undoubtedly changed the landscape, transforming the wild marsh into trampled grassland. Not content with destroying the forest paths by trampling the sandy tracks with their hooves, rendering them unsuitable for hiking, they are now attacking the marsh.
So you can't go down to the right into the marsh. Continue straight ahead on the earth embankment. Climb up onto a kind of bird observation kiosk, turn right and you'll find the route again.

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Peter Green
Peter Green

Overall rating : 4.3 / 5

Date of your route : Jan 31, 2022
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

A very pleasant hike alternating between forest and seaside passages.
Please note that the marsh section is no longer accessible; you will need to go around it, as the bridges mentioned in point 7 of the description (from memory) no longer exist.

A big plus is arriving at the wild coast after leaving the dunes and Gatseau beach, which is magnificent.

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eljoouri
eljoouri

Overall rating : 4 / 5

Date of your route : Sep 30, 2021
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A pleasant and easy hike. The land-sea crossing is magnificent. The description leaves something to be desired in certain parts of the route,
you just need to pay attention. I recommend it.

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aladin5
aladin5

Overall rating : 4.3 / 5

Date of your route : Oct 18, 2021
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A lovely walk through woods, forests and along the coast. The map isn't enough; you need guidance from the Visorando app, which I recommend. Aladin

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Heree
Heree

Overall rating : 5 / 5

Date of your route : Oct 04, 2021
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

The trail is in the forest. Look out for the American vines clinging to the trees. The arrival at Gatseau beach is magnificent. Continue along the railway tracks and you will arrive at Maumusson beach.

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