The former salt marshes of Saint-Armel and the Passage peninsula

Opposite Tascon Island, the former salt marshes of Lasné and Saint-Armel are a biodiversity reserve for both fauna and flora, and offer an ideal setting for a walk along the dykes, facing the bay between Tascon Island and the Passage Peninsula, completed by a circular route around the latter.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 6.10 km
  • ◔
    Average duration: 1h 45 
  • ▲
    Difficulty: Easy

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 3 m
  • ↘
    Descent: - 3 m

  • ▲
    Highest point: 6 m
  • ▼
    Lowest point: 1 m

Photos

Description of the walk

This walk starts from the same place as the tour of Tascon Island.

Whether you are coming from Vannes or Sarzeau, Île Tascon is clearly signposted at Saint-Armel and Lasné. In the village of Lasné, follow the signs for "Île Tascon" to reach the start of the submersible road leading to the island.
There is a large car park with a height restriction of 1.90 m. Another car park is reserved for motorhomes - free during the day and €5 per night.

(S/E) Head right from the car park (towards the east) and you will soon reach the path that runs along the dyke, bordering the marshes. This path crosses several locks that control the water level in the marshes.

(1) Still on the dyke, the path crosses the end of a cul-de-sac that has been converted into a picnic area and car park, which is also open to motorhomes. Continue north, now walking alongside the gardens of the seaside houses rather than the marshes. Soon, you will walk alongside the Route de Corn Vras, then alongside more properties.

(2) The path leads to Route du Passage. Turn left towards the passage.
Opposite, a path leads to the Hézo tide mill; on the left, the road follows the dyke, with the water on the left at high tide and salt meadows on the right, behind a hedge of trees.

(3) Leave the road and take the coastal path on the left, which once again runs alongside the gardens of the seaside properties.
Soon, you will see the small island of Corn Bihan on your left, before rejoining the Passage road.

(4) Take the road on the left that runs close to the sea; on the left, you will see Île Quistinic, where a large house was under construction at the time of the June 2021 walk. Arrive at Pointe du Passage, facing an island on which Bot Spernen Castle is visible.
Continue eastwards, passing an oyster farm, until you reach a crossroads in a block of houses.

(5) Turn right at a right angle onto the road heading south.

Note: due to a lack of observation (my fault!), we missed the footpath (marked "Sentier piétonnier" but without any signposts) at the crossroads, which allows you to make a circular route through the marshes before rejoining the road; we'll have to do that another time.

(6) After 500 metres of road (quite pleasant, all in all), you will find the start of the marsh trail, which we missed and which is well marked here: red and white markings for the GR 34, yellow for the circular loop.
Continue along the road to Route du Passage.

(7) Turn left and you will soon come to the fork in the road you took on the way there.

(3) Continue along the road, in the opposite direction to the outward journey but with a seascape altered by the change in tide, and return to the car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 3 m - Tascon Island car park
  2. 1 : km 1.16 - alt. 3 m - Small car park at the end of the road.
  3. 2 : km 1.85 - alt. 3 m - Seawall
  4. 3 : km 2.15 - alt. 3 m - Common fork A/R
  5. 4 : km 2.65 - alt. 3 m - Route du Passage
  6. 5 : km 3.24 - alt. 3 m - Start of the marsh option
  7. 6 : km 3.59 - alt. 3 m - Arrival of the marsh option
  8. 7 : km 3.86 - alt. 3 m - Return via the Passage road.
  9. S/E : km 6.1 - alt. 3 m - Tascon Island car park

Notes

No difficulty, you can do this walk in trainers with your hands in your pockets! The paths are always in good condition.

Worth a visit

I would like to reiterate my advice not to take the road at point (5) as we did, but rather the footpath indicated by a simple sign: continue straight ahead through the block of houses instead of taking the road on the right. Between points (5) and (6), you will then have a bucolic stretch through the salt meadows of 950 m instead of 350 m by road.

From point (2), it is also possible to reach the Hézo tide mill and find pleasant paths to return to our route, for example at point (1).

Reviews and comments

4.9 / 5
Based on 6 reviews

Reliability of the description
4.8 / 5
Ease of following the route
5 / 5
Route interest
4.8 / 5
Lucjean
Lucjean

Overall rating : 4.7 / 5

Date of your route : Oct 04, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A beautiful, easy hike. Worth noting nearby, in the village of St-Armel, is the renowned café/bakery Les Moulins, which was a welcome stop.

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Brigitte Marie
Brigitte Marie

Overall rating : 5 / 5

Date of your route : Jun 03, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : No

Magnificent landscapes.

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Monique87
Monique87

Overall rating : 5 / 5

Date of your route : Sep 22, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Very pleasant route

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cavalier70
cavalier70

Overall rating : 5 / 5

Date of your route : Sep 18, 2023
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

Interesting, varied route. Tracked with GPX without any problems.

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ROUSSEL Eric
ROUSSEL Eric

Overall rating : 4.7 / 5

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

A very pleasant route along the Gulf, very little - if any - traffic except for locals; numerous birds/wading birds along the route. May be quite muddy in winter...

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PatrickD56
PatrickD56

Overall rating : 5 / 5

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

A superb hike that I highly recommend. The views are magnificent and change depending on the tide.

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