Tour of the Mullembourg Marshes

Come and discover the soul of Noirmoutier on an easy, flat route where you can explore, in turn, the great Noirmoutier sea wall, the Mullembourg marshes, the sea and, finally, the small Vendée-style houses of the town of Noirmoutier-en-l’Île.

Details

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  • Walking
    Activity: Walking
  • ↔
    Distance: 5.79 km
  • ◔
    Average duration: 1h 40 
  • ▲
    Difficulty: Easy

  • ⚐
    Back to start: Yes
  • ↗
    Ascent: + 2 m
  • ↘
    Descent: - 2 m

  • ▲
    Highest point: 5 m
  • ▼
    Lowest point: 1 m

Description of the walk

The start is at the large car park at the entrance to Noirmoutier-en-l'Île coming from the D948.

(S/E) From the eastern entrance to the car park, take the main street on the left until you reach the traffic lights. Cross over, then take the small footbridge that crosses the Étier du Moulin. Turn right to walk along the quays, following Quai Jean Bart and then Quai Cassard. You will come to a small flight of steps.

(1) Climb the small flight of steps to walk along the Jetée de Jacobsen. Follow it for 1.5 km until you reach a junction.

(2) Take the path on the right, which continues as a seaside track skirting the Ancien Fort Larron. The track changes direction from south-east to north and leads onto a fairly wide path. Continue along this path, which runs alongside a pine forest, until you reach a junction near Fort Larron.

(3) Turn right onto Chemin du Larron, a tarmac road running alongside a campsite, heading north-north-east. You will reach a large five-arm roundabout.

(4) Take the2nd exit, Rue des Sableaux. Follow it straight on for about 300 m.

(5) Leave this street and turn left onto the dirt track known as Chemin de Ribandon, heading west initially then north-north-west. You will come to a small stream with a small wooden bridge.

:;6:: Cross the stream. The path heads west and widens to become Rue des Coques. Follow this street straight on until you reach the junction with Rue de la Fontaine.

(7) Turn left, leaving Rue de la Chevalerie on your right, and follow Rue de Blanzeau. As you go, admire the Vendée-style houses and the narrow streets. You will arrive at Place d’Armes.

(8) Turn left to walk along the east side of the square and you’ll find yourself on Quai Cassard at Étier du Moulin. Head back along the quays to the right and walk along the canal in the opposite direction to the way you came. Cross the small bridge at the end and you’ll reach the large car park (S/E).

Waypoints

  1. S/E : km 0 - alt. 3 m - Large car park at the entrance to Noirmoutier-en-Île
  2. 1 : km 0.72 - alt. 5 m - La Jetée Jacobsen
  3. 2 : km 2.19 - alt. 4 m - Fort Larron
  4. 3 : km 2.83 - alt. 3 m - Chemin du Fort Larron
  5. 4 : km 3.36 - alt. 3 m - Five-arm roundabout
  6. 5 : km 3.66 - alt. 4 m - Chemin de Ribandon
  7. 6 : km 4.24 - alt. 3 m - Petit Pont du Gué
  8. 7 : km 4.89 - alt. 4 m - Junction of Rue des Coques and Rue de la Fontaine
  9. 8 : km 5.19 - alt. 5 m - Place d'Armes
  10. S/E : km 5.79 - alt. 3 m - Large car park at the entrance to Noirmoutier-en-Île

Worth a visit

The two most beautiful views are the Jacobsen Jetty and the narrow streets of Rue de Blanzeau.

Reviews and comments

4.7 / 5
Based on 5 reviews

Reliability of the description
4.8 / 5
Ease of following the route
5 / 5
Route interest
4.2 / 5
jeango
jeango

Overall rating : 4.3 / 5

Date of your route : Mar 31, 2026
Reliability of the description : ★★★★☆ Good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A very classic route on the island of Noirmoutier. Interesting, but very busy during the school holidays

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User 24264617

Overall rating : 4.7 / 5

Date of your route : Sep 22, 2025
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

A short, easy and pleasant walk at both high and low tide.

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FraJosB
FraJosB

In the middle of August, Noirmoutier is certainly very busy, especially along the Jacobsen sea wall, where you’ll find walkers, cyclists and oyster farmers with their tractors! Fortunately, it’s quieter in the second section, in the marshlands and narrow streets.

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Gygma
Gygma

Overall rating : 5 / 5

Date of your route : Aug 12, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★★ Very good
Very busy route : Yes

A lovely walk.

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beric58
beric58

Overall rating : 4.7 / 5

Date of your route : Apr 12, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : Yes

some lovely photos to take...

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FraJosB
FraJosB

Thank you for your comments. Indeed, after this long spell of rain, I imagine the little stream must have burst its banks, as has happened on quite a few routes. As a seasoned hiker, you were wise to bring your IGN map with you – well done. I’ll add a note to the introduction.

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RICOU62
RICOU62

Overall rating : 4.7 / 5

Date of your route : Jan 06, 2024
Reliability of the description : ★★★★★ Very good
Ease of following the route : ★★★★★ Very good
Route interest : ★★★★☆ Good
Very busy route : No

A very easy route. No difficulties. But best done outside the heavy rain season. Due to recent rainfall, we had to alter the route twice, but this was no problem at all as we were following the IGN map.

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