4.2
(1994)
16,579
hikers
11
hikes
Hiking trails around Réserve naturelle de la baie de Somme traverse a dynamic estuarine environment where the River Somme meets the English Channel. The landscape features a mosaic of ecosystems, including vast tidal flats, salt meadows, and significant dune systems. Hikers can explore expansive marshes, which range from dry to humid and fresh to brackish. This protected area offers diverse terrain for outdoor activities.
Last updated: May 11, 2026
10.0km
02:32
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.8
(101)
1,316
hikers
4.99km
01:16
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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4.0
(3)
20
hikers
5.71km
01:27
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
3.0
(1)
26
hikers
14.1km
03:37
60m
60m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
3.7
(3)
11
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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Popular around Réserve naturelle de la baie de Somme
Beautiful hiking trail behind the dunes
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Stork not very afraid of our presence seen on the side of the road.
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I recommend this hike with its magnificent landscapes!
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Magnificent landscapes but walking is more difficult in the sand...
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Magnificent landscapes with breathtaking ecological richness. Here you can observe many species of salt-loving plants, migratory birds, and the largest colony of seals in France.
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There are 11 hiking trails available in the Réserve naturelle de la baie de Somme, catering to various skill levels. You'll find a mix of easy, moderate, and a few more challenging routes to explore the diverse landscapes of the bay.
The Réserve naturelle de la baie de Somme offers a unique and dynamic estuarine environment. Hikers can expect to traverse a mosaic of landscapes, including vast tidal flats, salt meadows, significant dune systems, and expansive marshes that range from dry to humid and fresh to brackish. The trails often provide views of the English Channel and the River Somme.
Yes, the reserve offers several easy hiking options perfect for beginners or families. Out of the 11 available routes, 6 are classified as easy. An example is the Park – Diverse vogels loop from Saint-Quentin-en-Tourmont, an easy 3.1-mile (5.0 km) path ideal for birdwatching within a park setting.
The bay is rich in natural features and wildlife. You can observe France's largest colony of harbor and grey seals basking on sandbanks, particularly near Le Hourdel. The Marquenterre Park is a premier ornithological reserve, offering exceptional birdwatching opportunities. Hikers can also enjoy the unique salt meadows, vast tidal flats, and impressive dune systems. Don't miss the Panoramic view of Marquenterre Park or the Marquenterre Park Observatory for stunning vistas.
Yes, there are several circular walks available. For instance, the Somme Bay – Le Crotoy Beach loop from Pointe à Guille is a 5.0-mile (8.0 km) circular trail that takes you through coastal areas and along the beach. Another option is the Somme Bay – Marquenterre Park loop from Parc du Marquenterre, an easy 3.5-mile (5.7 km) route.
The Réserve naturelle de la baie de Somme is beautiful year-round, but spring and autumn are particularly popular. These seasons offer pleasant temperatures for hiking and are prime times for bird migration, making them ideal for wildlife observation. Summer can also be great, especially for coastal walks, but be mindful of tides and potentially larger crowds. Winter offers a stark, wild beauty and unique birdwatching opportunities.
While the Réserve naturelle de la baie de Somme is a protected area, some trails and areas may permit dogs, often on a leash. It's always best to check specific regulations for each trail or section of the reserve before you go, as rules can vary, especially in sensitive wildlife habitats like the Parc du Marquenterre.
Public transport options to access hiking trails in the Réserve naturelle de la baie de Somme can be limited, especially for reaching specific trailheads within the reserve. While some coastal towns like Saint-Valery-sur-Somme and Le Crotoy are accessible by regional transport, reaching more remote starting points for hikes might require a car. It's advisable to research local bus services or consider carpooling for better access.
The area is highly rated by the komoot community, with an average score of 4.3 stars from over 950 reviews. Reviewers often praise the diverse landscapes, the abundance of wildlife (especially birds and seals), and the sense of wild natural beauty. Many appreciate the well-maintained paths and the opportunities for peaceful coastal and marshland walks.
Yes, charming coastal towns like Saint-Valery-sur-Somme and Le Crotoy, which are often starting points or pass-throughs for hikes, offer a variety of cafes, restaurants, and local culinary experiences. You can find places to refuel and enjoy local specialties before or after your hike. Some visitor centers within the reserve, such as the Maison de la Baie de Somme, may also have facilities or nearby options.
Generally, no specific permits are required for hiking on the designated public trails within the Réserve naturelle de la baie de Somme. However, certain areas, especially within the Parc du Marquenterre or for guided tours, might have entrance fees or specific access rules. Always respect signage and stay on marked paths to protect the fragile ecosystem.
For a moderate hike that explores the diverse habitats, consider the Les Crocs - Around Marquenterre Trail. This 6.2-mile (10.0 km) route takes approximately 2 hours 32 minutes to complete and offers a great overview of the landscapes surrounding the Parc du Marquenterre.


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