4.1
(48)
314
riders
25
rides
Gravel biking around Cayeux-sur-Mer offers diverse terrain along the English Channel coast. The region features an extensive pebble and shingle beach, backed by dunes, marshes, and grassy plateaus. It sits on the southern edge of the Baie de Somme, an area known for its unique ecosystem and coastal paths. Further south, the impressive Cliffs of Ault provide additional varied landscapes for exploration.
Last updated: July 3, 2026
4.4
(9)
56
riders
54.5km
03:16
230m
230m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.9
(7)
44
riders
30.3km
01:45
80m
80m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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4.5
(2)
32
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.5
(2)
9
riders
35.7km
02:27
270m
260m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1.0
(1)
6
riders
47.0km
02:57
160m
160m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Very worthwhile canal, recommended!
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A very beautiful place, even without seals.
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The scenery is very beautiful, with lots of birds, cows, horses, and sheep. The road is made of pebbles and quite strenuous to ride.
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Unfortunately, it's not that easy to see the seals, which is a shame.
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During the French Revolution, the church served as a "Temple of Reason" and hosted a festival in honor of the Supreme Being on June 8, 1794.
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One of the finest examples of Flamboyant Gothic architecture in maritime Picardy, constructed between 1488-1539 for the nave and 1661-1663 for the choir. The church was built on marshy ground near a branch of the Somme River with an unusual north-facing façade instead of the traditional western orientation. During World War II, German artillery bombardment on May 20, 1940, caused a devastating fire that destroyed much of the building, with restoration completed only in 1998.
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The current church, built in 1928 in the Romanesque-Byzantine style, is located in the oldest quarter of the city. It has a Latin cross plan, oriented northwest and southwest. The roof is slate, and the nave is covered with long sides and open gables. It features flamboyant stained-glass windows, a listed 17th-century altarpiece, and a Saint Martin's effigy.
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There are over 30 gravel bike trails around Cayeux-sur-Mer, offering a variety of experiences. These include 6 easy routes, 20 moderate routes, and 5 more challenging options, ensuring something for every skill level.
Gravel biking in Cayeux-sur-Mer offers incredibly diverse landscapes. You'll encounter extensive pebble beaches, coastal paths, dunes, marshes, and grassy plateaus. Routes often skirt the ecologically rich Baie de Somme and venture towards the impressive Cliffs of Ault, providing a mix of coastal and natural reserve scenery.
Yes, Cayeux-sur-Mer offers several family-friendly options, particularly along the flat canal paths. Routes like the Saint-Valery-sur-Somme Lock – Cycle path along the Canal Somme loop from Saint-Valery Canal are generally easy and scenic, perfect for a relaxed ride with the family. The car-free Route Blanche through the dunes is also a great choice for all ages.
Many routes offer views of significant landmarks and natural features. You can cycle past the Le Hourdel Lighthouse, explore sections of the White Route of the Bay of Somme, or enjoy the dramatic scenery of the Ault Chalk Cliffs. The Port of Saint-Valery is also a charming stop on some routes.
Yes, cycling towards Le Hourdel is an excellent way to observe the Baie de Somme's seal colony. The area is home to France's largest seal colony, and you can often spot both harbor and grey seals on sandbanks at low tide. The View of the Bay of the Somme and its seals highlight is a great spot for this.
The region is enjoyable for gravel biking throughout much of the year. Spring and autumn offer pleasant temperatures and fewer crowds. Summer is also popular, especially for coastal rides, but can be busier. Winter rides are possible, but be prepared for potentially colder and windier conditions, particularly along the exposed coastline.
Yes, many of the gravel bike routes around Cayeux-sur-Mer are designed as loops. For example, the Cycle path along the Canal Somme – Kanal der Somme loop from Morlay offers a circular experience through the Somme Canal area. Several routes exploring the Cliffs of Ault, such as Cliffs – Eastern end of Falaises d'Albâtre, Ault coastal panorama loop from Ault, are also circular.
The gravel biking routes in Cayeux-sur-Mer are highly rated by the komoot community, with an average score of 4.1 stars from over 40 reviews. Reviewers often praise the diverse terrain, the stunning coastal views, and the peaceful atmosphere of the natural reserves. Many appreciate the well-maintained paths and the variety of options for different skill levels.
While Cayeux-sur-Mer has some local transport, direct public transport links to specific trailheads might be limited. The Chemin de Fer de la Baie de Somme, a heritage railway, connects Cayeux-sur-Mer to other towns like Saint-Valery-sur-Somme and Le Crotoy, which could be used to access routes further afield. For detailed public transport information, it's best to check local schedules.
Cayeux-sur-Mer itself, and nearby towns like Le Hourdel and Saint-Valery-sur-Somme, offer various cafes, restaurants, and pubs where you can refuel. While not directly on every trail, many routes pass through or near these charming coastal settlements, making it easy to find a spot for a break and a refreshment.
Yes, several routes focus on the dramatic Cliffs of Ault. For instance, the At the foot of the cliffs of Ault – Eastern end of Falaises d'Albâtre, Ault coastal panorama loop from Ault offers an immersive experience of this impressive natural feature, providing coastal views and varied terrain. Another option is the Strada biancha Picarda – Eastern end of Falaises d'Albâtre, Ault coastal panorama loop from Saint-Quentin-la-Motte-Croix-au-Bailly.
The Route Blanche is a 3-kilometer car-free path that winds through the dunes near Cayeux-sur-Mer. Its varied ground conditions, including sand, gravel, and compacted earth, make it perfectly suited for gravel biking. It offers a unique and scenic cycling experience, connecting to other routes in the area.


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