The Château Serein and Fort La Latte

The Bay of La Fresnaye is one of the most beautiful sites on the Emerald Coast. Sheltered from the prevailing winds, a balcony path winds its way through sparse groves of ash, pine and flowering gorse on the slopes of the small cliffs on the western shore of the bay.
The hike starts at the small hidden beach of Château Serein, follows this balcony trail offering beautiful views of the bay, passes through the tiny port of Saint-Géran and ends at the tip of Fort La Latte.

Details

1084907
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  • Walking
    Activity: Walking
  • ↔
    Distance: 10.25 km
  • ◔
    Average duration: 3h 35 
  • ▲
    Difficulty: Moderate

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 217 m
  • ↘
    Descent: - 225 m

  • ▲
    Highest point: 80 m
  • ▼
    Lowest point: -2 m
  • ⚐ Country: France
  • ⚐ City: Plévenon (22240|)
  • ⚑
    Start/End: N 48.64124° / W 2.315782°
  • ❏
    IGN map(s): Ref. 1016ET
  • Hour-by-hour weather

Photos

Description of the walk

A small, hidden car park... Please note! The car park is not easy to find. On leaving Trécelin via the Plévenon road, turn right onto the D117 (Rue de Château Serein) and, 500m further on, don’t miss the path on the right leading to this car park (Place de Château Serein).

(S/E) At the far end of the car park, take a path leading down to the beach (Photo 1). As you go, take a moment to observe the various species of ferns lining this often damp path.

(1) Please note: contrary to the map, the junction with theGR®® is on the beach. A small sign on the left indicates where theGR®®34rejoins the route. This undulating balcony path will take you up to the top of the port of Saint-Géran (Photo 2).

(2) From the car park above the harbour, walk up the road for 30 metres and join theGR®®34on the right (Photo 3). Stay on theGR®® and ignore the paths branching off to the left or right. The path winds through groves of pine and ash trees,... (Photos 4 and 5). They are sparse enough for you to enjoy beautiful views of the bay. At a bend in the path, Fort La Latte will come into view (Photo 6).

(3) TheGR®® leads out in front of the hut selling tickets to the fort. Cross the path leading to the fort’s car park and continue along theGR®® right next to this hut. Stay on the path running along the cliff top above the shore. This section ofthe GR®®, very popular with visitors to the fort, offers a distant view of Cap Fréhel.

(4) About 700 m from the hut, leave theGR®® via a path on the left that climbs towards the fort’s car park. Walk for about 100 metres. As soon as the path opens out onto a field, leave it and take the farm track that climbs to the right towards the small hamlet of La Latte.

(5) Take the small road on the right which joins the Allée de la Ville Horieux at the junction with the D117. Cross the road and take the Allée de la Ville Horieux almost opposite, following the sign for the Chèvrerie du Cap.

(6) After passing the goat farm, turn left to stay on Allée de la Ville Horieux.

(7) At the crossroads, turn left onto a road. Pass through the hamlet of La Roche Lossoie (Photo 8) and then that of La Ville Tourain. Continue downhill to the port of Saint-Géran.

(2) Between the port of Saint-Géran and Château Serein beach, the foreshore is very often above water as it lies at an altitude of around 4 m above sea level. So if you arrive at the port of Saint-Géran between 2 hours before and 2 hours after low tide, it is likely that you will be able to reach Château Serein beach directly by crossing this foreshore (Photo 9).

It is very pleasant to walk barefoot on this sandbar as the sand is firm and clean (no mud).
But you must, of course, have checked the tide heights for the relevant time (see Practical Information) before setting off.

If the water level is too high, reach Château Serein beach via the coastal path taken during the first section of this walk.

(1) Once you reach Château Serein beach, you will easily find the path leading back up to the car park (S/E)

Waypoints

  1. S/E : km 0 - alt. 58 m - Place de Château Serein
  2. 1 : km 0.63 - alt. 7 m - Château Serein Beach
  3. 2 : km 2.2 - alt. 22 m - Port Saint-Géran
  4. 3 : km 4.95 - alt. 32 m - Fort La Latte
  5. 4 : km 5.61 - alt. 51 m - Junction with the car park path
  6. 5 : km 6 - alt. 78 m - Junction where the path leaves the car park
  7. 6 : km 6.46 - alt. 67 m - La Chèvrerie du Cap
  8. 7 : km 6.9 - alt. 73 m - Return via the Saint-Géran road
  9. S/E : km 10.24 - alt. 57 m - Place de Château Serein

Notes

On the first two sections (1) to (3), the path is ‘undulating’, meaning it goes up and down frequently.
However, the elevation changes are not very significant (20 to 30 m).

Nevertheless, we found the walk easy for a regular hiker.

With the exception of the section near Fort La Latte, the path is well sheltered from the wind and the harshest sun.

Tide times can be checked on the SHOM (French Naval Hydrographic and Oceanographic Service) website:
https://maree.shom.fr/
by selecting the port of Saint-Cast (which is the closest reference point to the walk).

Worth a visit

Of course, you can take the opportunity to visit Fort La Latte.

And if you like goat’s cheese, you can buy some at the Chèvrerie du Cap.

Always be cautious and plan ahead when you're outdoors. Visorando and the author of this route cannot be held responsible for any accidents occurring on this route.

The GR® and PR® markings are the intellectual property of the Fédération Française de Randonnée Pédestre.

Reviews and comments

4.7 / 5
Based on 42 reviews

Reliability of the description
4.7 / 5
Ease of following the route
4.7 / 5
Route interest
4.7 / 5
Trickpanope
Trickpanope

Thank you, "User 18753009", for your information regarding the section in point 4.

I’ll need to do this hike again to correct this point.
Kind regards.

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User 18753009

Overall rating : 4 / 5

Date of your route : Apr 06, 2026
Reliability of the description : ★★★☆☆ Average
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★★ Very good
Very busy route : No

A brilliant walk! The route was fantastic, with stunning views of the bay and the mussel farm in the first section, as well as of Fort La Latte and Cap Fréhel. The first section is certainly a bit more demanding physically, but it’s perfectly manageable and walkable. It gets busier as you approach Fort La Latte, but the rest of the walk is very peaceful and pleasant.
Be careful, though! The path marked as point number 4 on the map is no longer accessible to the public!! You must take the usual path towards the car park as soon as you reach the fort (point number 3) and not take the path towards Cap Fréhel!
Apart from that, I highly recommend this walk!

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User 27858330

Overall rating : 5 / 5

Date of your route : Oct 14, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A more challenging route than Cap Fréhel, with stairs and significant elevation changes, but a very beautiful trail with views of Frenaye Bay.

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User 27858330

Overall rating : 5 / 5

Date of your route : Oct 13, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Great hike, excellent map and explanations.
We also had fantastic sunny weather.

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Trickpanope
Trickpanope

Thank you for your comments.

For your information: The elevation gain indicated was calculated using the Visorando mapping tool (based on IGN digital terrain data).
However, as this is a route along the side of a cliff, it cannot be accurate. A deviation of 2 to 3 m to the side of the route can cause the altitude measurement to vary by around 10 m.

"User 12886212" measured a cumulative elevation gain of 339 m (thank you for this information)
339 m: It's possible, I can't say for sure.
Unless you have a very accurate GPS (to the nearest metre) with very dense sampling, it is almost impossible to know.

Enjoy your walks, everyone.

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User 12886212

Overall rating : 5 / 5

Date of your route : Jul 21, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

The only downside is the elevation gain. It was listed as 217 metres, but we actually climbed 339 metres. It was a little harder than we thought, but we managed to do it in 2 hours and 40 minutes, so that's fine.

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Daniel dd
Daniel dd

Overall rating : 4 / 5

Date of your route : Jun 30, 2025
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★☆ Good
Route interest : ★★★★☆ Good
Very busy route : No

The part of the castle near Port St Geran is not very pleasant.
It's in the forest with some tricky sections.
You can see beautiful beaches, but you can't access them, which is a shame.
After the port, the GR 34 is more pleasant and you finally arrive at beautiful views of the bay and the fort.

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RVFM
RVFM

Overall rating : 3.7 / 5

Date of your route : Sep 15, 2024
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★☆☆☆ Disappointing
Route interest : ★★★★★ Very good
Very busy route : No

The first part of this walk was sublime, with lots of ascents and descents and beautiful views, but after the cabin at the entrance to Fort La Latte, at point 4, we didn't understand which path to take, Not finding a path on the left and not knowing if we had walked the full 700m, we retraced our steps, taking the path on the left at the fork shortly after entering the GR, close to the Fort La Latte hut.? Unfortunately, we took the road all the way back to Château Serein, which was a shame, because it was a beautiful route.... The Visorando information sheet could do with some clarification on point 4! And for a Sunday in September, in fine weather, in the morning, there were very few hikers... It was pleasant.

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D50
D50

Overall rating : 4.7 / 5

Date of your route : Aug 14, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A pleasant walk with no particular difficulties.

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gchardon
gchardon

Overall rating : 4.7 / 5

Date of your route : Apr 14, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

Lovely walk, mostly in the forest. The beach is covered in seaweed though...

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User 2286311

Overall rating : 4.3 / 5

Date of your route : May 08, 2023
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

The first part is fairly strenuous without much visual interest, then there is a superb view of Fort la Latte.
In mid-April, the undergrowth is magnificently in bloom, with wood hyacinth, common primrose, maritime silene, male orchid, etc...

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Trickpanope
Trickpanope

Thank you Mac clure.
I'm glad you enjoyed my modest contribution.

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Mac clure
Mac clure

Overall rating : 5 / 5

Date of your route : Apr 17, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

A very pretty walk along the bay in glorious sunshine, with a majestic finish at Fort La Latte. We highly recommend it, especially as the tour is perfectly described in the information sheet.

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bcheron
bcheron

Overall rating : 4.7 / 5

Date of your route : Apr 16, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A lovely walk! After the goat farm, we took the route marked in blue on the map, passing through: la Ville Meunier, Kérivet, le Pont Nouvel, la Tertre Venelle, la Ville Courbé, le Gros Moulin, la Vallée and then back along the GR to the car park. This section was a little damp but very little used. It uses almost exclusively dirt tracks and takes in the surrounding hamlets.

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Coquelinc
Coquelinc

Not used as we discovered on arrival that the access was not direct.
So we improvised our own route

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