4.3
(782)
4,370
riders
346
rides
Mountain biking in Parc Naturel Régional Baie De Somme Picardie Maritime offers diverse terrain across coastal and inland environments. The region features expansive tidal flats, golden dunes, and pebble beaches along the English Channel. Further inland, riders encounter lush green prairies, marshes, and the significant Forest of Crécy. Limestone-rich hills known as Larris provide elevated viewpoints over the valleys.
Last updated: August 23, 2026
4.5
(47)
210
riders
47.9km
02:41
100m
100m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.6
(32)
182
riders
54.6km
02:54
110m
110m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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4.5
(32)
148
riders
Moderate mountain bike ride. Great for any fitness level. Advanced riding skills necessary.
4.6
(32)
170
riders
53.8km
02:43
100m
100m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.4
(17)
68
riders
53.1km
03:25
180m
180m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.
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Very beautiful to see the bay from this viewpoint at sunrise.
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Very worthwhile canal, recommended!
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A very beautiful place, even without seals.
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At least on the cobblestones, the mountain bike pays off :-)
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Unfortunately, it's not that easy to see the seals, which is a shame.
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At the crossroads of dunes, marshes, and pine forests, the Marquenterre Park is a 260-hectare natural sanctuary, in the heart of the Baie de Somme. 🕊Here, hundreds of species of migratory birds stop over — and you can observe them from thirteen observation huts spread along an immersive six-kilometer route (with shorter options). 🔎 Whether visiting freely or on a guided tour, passionate naturalist guides share their knowledge with you, each season. 📸 The park also offers themed walks, photo and ornithology workshops to deepen the experience. 🚲 Good to know for cyclists: - Easy access via cycle paths (Baie de Somme, Le Crotoy…) - On-site bike parking, catering, nature shop/bookstore - Binoculars recommended (available for rent on site) 👉 A must-see for lovers of wild nature and wide open spaces.
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Hourdel Lighthouse is a lighthouse on the common Cayeux-sur-Mer, it is built on the south side of the Bay of Somme, at the end of the point of Hourdel.
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There are over 330 mountain bike trails in the Parc Naturel Régional Baie De Somme Picardie Maritime, catering to various skill levels. This includes more than 120 easy routes, over 200 moderate routes, and a few challenging options for experienced riders.
The region offers a diverse range of terrain. You'll find coastal paths along golden dunes and pebble beaches, expansive tidal flats, and salt meadows. Inland, trails traverse lush green prairies, marshes, and sections of the significant Forest of Crécy. Some routes also climb limestone-rich hills known as Larris, providing unique vegetation and panoramic views.
Yes, the region is very family-friendly, with over 120 easy mountain bike routes. The area boasts 160 km of cycling paths, including 77 km of dedicated cycle paths, making it suitable for all ages. Remember that helmets are mandatory for children for safety.
Many trails offer stunning views and access to natural attractions. You can spot France's largest colony of harbour seals in the bay, particularly from viewpoints like View of the Bay of the Somme and its seals. The Ault Chalk Cliffs and Cape Hornu offer dramatic coastal scenery. The Parc du Marquenterre is a world-class bird sanctuary, and the Forest of Crécy provides a tranquil forest experience.
Yes, many routes in the region are designed as loops, allowing you to start and finish at the same point. An example is the Promenade Alfred Manessier – Saint-Valery-sur-Somme loop from Gare du Crotoy, a moderate 36.7 km trail.
The Baie de Somme is beautiful throughout the year, with its dynamic landscape constantly reshaped by tides and light. Spring and autumn offer pleasant temperatures and vibrant scenery, making them ideal for exploring. The region's diverse ecosystems, including migratory birds at Parc du Marquenterre, provide unique experiences in different seasons.
Absolutely. Many routes connect or pass through picturesque towns. For instance, the Somme Bay – Saint-Valery-sur-Somme loop from Routhiauville offers views of the historic town of Saint-Valery-sur-Somme, known for its medieval charm. Other routes might take you near Le Crotoy or Cayeux-sur-Mer, offering opportunities to explore and enjoy local cuisine.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 600 reviews. Reviewers often praise the diverse coastal and inland landscapes, the well-maintained cycle paths, and the opportunities for wildlife spotting, especially the seals and birds.
While the majority of routes are moderate, there are longer options available. For example, the Parc du Marquenterre – Cycle track loop from Gare du Crotoy is a moderate 54.1 km path, and the Le Crotoy Beach – Le Crotoy loop from Fort-Mahon-Plage covers 51.5 km, offering extended rides through varied landscapes.
The region has some public transport options, and some routes, like the Parc du Marquenterre – Cycle track loop from Gare du Crotoy, start from Gare du Crotoy, indicating train access. For detailed information on public transport routes and schedules, it's advisable to check local transport websites or the official tourism site for the Baie de Somme: tourisme-baiedesomme.fr.
While the region is a natural park, specific rules regarding dogs on mountain bike trails can vary. Generally, dogs are often permitted on trails if kept on a leash, especially in protected areas like the Parc du Marquenterre. It's always best to check local signage or the park's official guidelines for the most current information to ensure a pleasant experience for everyone.


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