4.5
(1153)
6,664
hikers
325
hikes
Hiking around Houlle offers exploration within the Audomarois marshes, a UNESCO Biosphere Reserve in Pas-de-Calais, France. This region is characterized by a unique blend of land and water, featuring an extensive network of canals, ponds, and the meandering River Houlle. The landscape, shaped by historical human activity and natural processes, supports diverse flora and fauna, providing a distinct environment for outdoor activities.
Last updated: May 30, 2026
4.7
(37)
173
hikers
9.81km
02:29
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.6
(10)
34
hikers
11.8km
03:00
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.3
(4)
31
hikers
6.63km
01:46
70m
70m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.7
(9)
31
hikers
9.71km
02:28
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
16
hikers
15.1km
03:54
70m
70m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Signposted walking route in the forest
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Chateau de Tilques is a hotel and restaurant located in Tilques, France. The current chateau was built in 1891 and replaced an old manor house from the 17th century. It is a beautiful example of neo-Flemish architecture. The hotel has 26 rooms in the chateau and 24 more contemporary rooms in the Pavillon du Parc. The restaurant, called Vert Mesnil, offers market cuisine with carefully selected local produce. The hotel also has a heated indoor swimming pool that is free for guests. It is an ideal place to relax and enjoy the peaceful surroundings of Saint Omer.
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This 22m high bunker protrudes like a mountain of concrete above the fôret d'Eperlecques. It was built as a launching pad to bombard London with V2 rockets. The 5m thick concrete capstone was gradually lifted with a jack system as construction progressed. He had to protect the workers from the bombardments. But on August 27, 1943, 185 "flying fortresses" launched in England dropped several tons of bombs on the bunker. Numerous deportees who were employed there died in the bombardment. The bunker was then enlarged to house a liquid oxygen plant.
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Nice road but asphalt completely rotten.
2
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Very soothing place but actually forbidden to bike.
3
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Dirt road between two nice waters a little brittle in Gravel.
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Nice gravel path to chain with the other arm of the Grand Large on the other side of the bank.
3
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Hiking around Houlle offers a unique immersion into the Audomarois marshes, a UNESCO Biosphere Reserve. The landscape is characterized by an extensive network of waterways, canals, and wetlands, providing a distinct blend of land and water. You'll find diverse flora and fauna, traditional waterside scenery, and a peaceful environment for exploration.
There are over 300 hiking routes available around Houlle. The area caters to various skill levels, with more than 130 easy routes and over 150 moderate trails. Only a small number, around 12, are considered difficult.
Yes, Houlle offers over 130 easy routes, perfect for beginners or family-friendly outings. These trails allow you to enjoy the unique marshland scenery without strenuous effort. For example, the The Éperlecques Blockhaus – Foret d' Eperlecques loop from Watten is an easy 6.6 km trail that takes about 2 hours to complete.
The primary attraction is the vast Audomarois marshes themselves, with their labyrinthine waterways and rich biodiversity. You might spot swans or grey herons. A significant natural highlight is the Romelaëre Ponds Nature Reserve, known for its ponds, canals, and diverse wildlife, including various bird species. The Romelaëre Nature Reserve Circuit is a great way to explore this area.
The routes in Houlle are highly rated by the komoot community, with an average score of 4.5 stars from over 1000 reviews. More than 6000 hikers have used komoot to explore Houlle's varied terrain, often praising the unique marshland environment and the peacefulness of the trails.
Many of the trails around Houlle are designed as loops, allowing you to start and end at the same point. An example is the Chain tray – Lansberghe Path loop from Serques, a moderate 9.8 km trail that offers views of the marshland and traditional waterside scenery.
While specific regulations for dogs vary by trail and protected area, generally, dogs are welcome on many public footpaths in the Audomarois marshes, provided they are kept on a leash to protect local wildlife and respect other hikers. It's always best to check local signage for any specific restrictions.
The Audomarois marshes offer beauty year-round. Spring brings blooming flora and active birdlife, while summer provides pleasant weather for longer explorations. Autumn showcases beautiful colors, and even winter can be serene, with a different kind of quiet beauty. However, some paths might be muddier after heavy rain, so appropriate footwear is always recommended.
Yes, the region has a rich history. The village of Houlle itself features a historic church with a 12th-century Romanesque tower and the 6th-century Saint-Bertin well. Nearby, you can also find the Saint-Omer Cathedral and the Watten Hill, which offers panoramic views of the surrounding area.
The Audomarois marshes are a haven for biodiversity. You might encounter over 200 species of birds, including swans and grey herons, as well as various fish species and nearly 400 varieties of plants. The unique wetland environment supports a rich ecosystem, making it an excellent spot for nature observation.
While the majority of routes are easy to moderate, there are a few more challenging options for experienced hikers. For example, the Monument aux mort – Saint-Omer Marshes loop from Watten is a moderate 11.8 km path that explores the wider Saint-Omer Marshes, offering a longer and more immersive experience.


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