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Medium Loop À vélo · Gravel, Road cycling Vérifié

The loop of the 13 communes of the Audomarois marshlands

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52.8km
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Gravel 3h57
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Road cycling 2h57
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376m+
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376m−
Sports

Set off on a long loop through the communes of Flandres and the Audomarois. This itinerary takes you from village to village, discovering the diversity of the landscapes surrounding the marsh, with 13 communes crossed. Along the way, you'll catch occasional glimpses of the marsh landscape, alternating between wooded stretches and country roads.

Quentin
Proposed by
Quentin · Tourisme en Pays de Saint-Omer
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The highlight of the route is the ascent to the Moulin de Watten, which offers a superb panoramic view of the Audomarois. 53km long and with a steep gradient, this loop is aimed at cyclists who are used to this type of route.

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Start 0 km
The loop of the 13 communes of the Audomarois marshlands
1
Point 1 0 km
La Maison du Marais
At the foot of the town of Saint-Omer, between the heritage centre and the marsh, the Maison du Marais offers you a chance to immerse yourself in all aspects of the marsh thanks to two new interactive exhibitions entitled "Chez Capiau, la vie d'un maraîcher" and "L'Aventure Sous-Marais". The team of eco-interpreters will also take you on a traditional boat tour to discover the flora and fauna of the wild and inhabited marshes. You might even be lucky enough to see the fish being fed... and why not try a snack on the terrace by the pier?
Maison du Marais Groupe Bacôve 2020 SAINT-MARTIN-LEZ-TATINGHEM
Maison du Marais - Drone - 2022
 Exposition Capiau - Maison du Marais 2025
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2
Point 2 4.5 km
Tilques Castle
Tilques Castle: a stopover full of character.
3
Point 3 7.5 km
L'estaminet l'Angèlus
If your visit coincides with mealtimes, why not drop in on this typical Northern estaminet!
4
Point 4 17.1 km
The Blockhaus at Éperlecques
An imposing vestige of the Second World War, the Éperlecques Blockhaus is one of the largest bunkers in northern France.
5
Point 5 20.9 km
View from the Moulin de Watten
It's a tough climb... but there's a breathtaking view waiting for you at the top!
6
Point 6 24.1 km
Crossing Ham Wood
Let yourself be carried away on a descent through the trees!
7
Point 7 26.9 km
The church of Saint-Momelin
8
Point 8 40.8 km
The Clairmarais cave
An unusual break in the heart of nature.
9
Point 9 47.7 km
The Flanders lock
10
Point 10 48.8 km
Along the cycle route between Arques and Saint-Omer
End 52.75 km
The loop of the 13 communes of the Audomarois marshlands

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Quentin
Proposed by
Quentin
Tourisme en Pays de Saint-Omer
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La plateforme d'itinérance touristique du Pays de Saint-Omer. Parcours vélo, randonnées, trails et canoë — sélectionnés et vérifiés par l'Office de Tourisme.

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