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France
Hauts-De-France
Saint-Omer

Clairmarais

The best walks and hikes around Clairmarais

4.4

(546)

3,017

hikers

39

hikes

Hiking around Clairmarais offers a unique exploration of the Audomarois marsh, a landscape shaped by centuries of human interaction with water. The region features an extensive network of canals and rivers, alongside the tranquil Clairmarais Forest and numerous ponds. Elevation changes are minimal, making most trails accessible and focused on the distinctive wetland and woodland environments.

Best hiking trails around Clairmarais

  • The most popular hiking route is Le marais audomaroiss — loop from Clairmarais in the parc naturel régional des…

Last updated: May 12, 2026

4.7

(118)

492

hikers

#1.

Le marais audomaroiss — loop from Clairmarais in the parc naturel régional des Caps et marais d'Opale

7.60km

01:55

10m

10m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Tips from the Community

Marine - La Ch’tite Randonneuse 🥾
January 24, 2026, Réserve Naturelle des Étangs du Romelaëre

Closed until March 15th

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Please note: closed until March 15th

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The Barrière Flamande is a gate whose top beam, which holds the entire gate together, is made from a single piece of wood, with the stump acting as a counterweight. Well-balanced on its pivot point, this gate opens effortlessly.

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Sylvie
August 1, 2025, Une tourbière

peat bog information

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nature reserve where you can take a short circular walk (1 hour) and go to the observatory

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super

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A midweek walk in March, outside of school holidays. Few people. A joy.

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For gravel bikes this is possible. For touring bikes and city bikes it is more difficult. With luggage you will have to transfer the luggage separately.

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Frequently Asked Questions

How many hiking trails are available in Clairmarais?

Clairmarais offers a wide variety of hiking experiences, with over 35 routes available. These trails explore the unique Audomarois marsh, tranquil forests, and intricate network of canals.

What kind of landscapes can I expect to see while hiking in Clairmarais?

Hiking in Clairmarais immerses you in a unique blend of wetlands, forests, and cultural landscapes. You'll primarily encounter the extensive Audomarois marsh, characterized by a labyrinth of land and water, 700 km of rivers and canals, and fertile market gardens. The Clairmarais Forest also offers shaded, tranquil paths, and you'll find numerous ponds and waterways throughout the area.

Are there many easy hiking options in Clairmarais?

Yes, Clairmarais is very accessible for hikers of all levels. There are over 20 easy routes, making it an ideal destination for relaxed strolls and family outings. These trails often have minimal elevation changes, focusing on the distinctive wetland and woodland environments.

What makes Clairmarais a unique hiking destination?

Clairmarais stands out due to its extensive Audomarois marsh, a landscape shaped by centuries of human interaction with water. This unique ecosystem features a vast network of canals, traditional market gardens, and even routes that incorporate chain ferries for distinctive crossings, such as the From one bank to the other – Ferry crossing loop from Clairmarais.

Are there any circular hiking routes in Clairmarais?

Many of the hiking routes in Clairmarais are circular, allowing you to start and end at the same point. For example, the popular Le marais audomaroiss — loop from Clairmarais is a 7.6 km loop that explores the marshland environment.

Can I find trails that explore the Audomarois marshland specifically?

Absolutely. The Audomarois marsh is the defining feature of the region. Routes like the Le marais audomaroiss — loop from Clairmarais are specifically designed to take you deep into this unique wetland environment, showcasing its canals, market gardens, and rich biodiversity.

Are there any family-friendly walks in Clairmarais?

Yes, Clairmarais offers several family-friendly walks, particularly due to the prevalence of easy trails and minimal elevation. The Chain tray – Entrance to the reserve loop from Clairmarais is a shorter, easy option at 3.1 km, perfect for families with younger children. The Romelaëre National Nature Reserve also features accessible paths, including a 4 km Cormorant Trail on stilts, which is enjoyable for all ages.

What wildlife can I expect to see on the hiking trails?

Clairmarais, especially the Romelaëre Ponds Nature Reserve, is a haven for wildlife, particularly birds. You can observe a wide variety of species, including ash herons, coots, storks, reed warblers, crested grebes, terns, and even the emblematic starry bittern. The reserve also hosts one of France's largest cormorant colonies, with observatories along the trails for excellent birdwatching opportunities.

Are there any interesting landmarks or attractions near the hiking routes?

Yes, several points of interest can be explored alongside your hikes. The Grange Nature in the heart of the Audomarois marsh serves as an information hub with exhibitions on the region's biodiversity. You can also visit the Romelaëre Ponds Nature Reserve for birdwatching, or explore historical sites like the War memorial – Clairmarais Church loop from Clairmarais.

What do other hikers enjoy most about hiking in Clairmarais?

The komoot community highly rates hiking in Clairmarais, with an average score of 4.5 stars from over 500 reviews. Hikers frequently praise the unique marshland scenery, the tranquility of the forests, and the well-maintained network of trails. The opportunity to experience the distinctive chain ferry crossings and observe diverse wildlife are also often highlighted as favorite aspects.

Are there any trails suitable for dog walking?

While specific dog-friendly designations vary, many of the natural trails through the marsh and forest areas are suitable for dogs, provided they are kept on a leash to protect local wildlife and respect other hikers. It's always recommended to check local signage for any specific restrictions within nature reserves.

What is the best time of year to hike in Clairmarais?

Clairmarais offers pleasant hiking conditions throughout much of the year. Spring and autumn are particularly beautiful, with vibrant foliage or blooming flora and comfortable temperatures. Summer is also popular, though some trails might be more exposed to the sun. Winter hiking is possible, offering a different, serene perspective of the marshland, but be prepared for potentially muddy conditions.

Are there any trails that pass through the Clairmarais Forest?

Yes, the Clairmarais Forest (Rihoult-Clairmarais Forest) provides a lovely setting for walks. The The Nature Barn – Clairmarais Forest loop from Clairmarais is a longer route that takes you directly through this tranquil woodland, offering both shaded, landscaped trails and wilder paths.

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