4.4
(598)
3,634
hikers
69
hikes
Hiking around Cayeux-Sur-Mer offers access to diverse natural landscapes, situated on the southern edge of the Baie de Somme. The region features an expansive tapestry of dunes, marshes, and grassy plateaus, providing varied terrain for exploration. Key natural features include the Pointe du Hourdel, known for seal watching, and the Hâble d'Ault, a bird sanctuary. The area also boasts a pine forest with marked walks and the dramatic Ault Chalk Cliffs nearby.
Last updated: July 7, 2026
4.1
(100)
420
hikers
10.5km
02:39
20m
20m
Hike the moderate 6.5-mile Le Hourdel Loop to explore diverse coastal and inland scenery, spot seals, and discover historical landmarks.
4.0
(105)
494
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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4.1
(104)
502
hikers
8.43km
02:08
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.5
(29)
199
hikers
16.2km
04:06
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.6
(19)
147
hikers
7.86km
01:59
10m
10m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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It remains a strange feeling to come across traces so long after the war.
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The traces of the Second World War are still omnipresent, even after 80 years.
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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.
4
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15 km route in the Hâble (bird reserve, Henson horses in pasture, tranquility)..... for the journey time: here it is Nordic walking...allow a little more for the walk.
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The bunker looks bizarre. Unfortunately it was high tide and no seals were to be seen
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the magic of the Bay of Somme and the marriage with the sea. Just pay attention to the tide times but there is a path at the top and protects you
3
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There are over 60 hiking routes around Cayeux-sur-Mer. These include a variety of options, with 36 easy trails, 24 moderate routes, and 2 more challenging hikes, catering to different fitness levels.
The terrain around Cayeux-sur-Mer is quite varied, featuring an expansive tapestry of dunes, marshes, and grassy plateaus. Many routes follow coastal paths, while others venture into pine forests or along the unique pebble beach. The general elevation changes are minimal, making most trails accessible.
Yes, Cayeux-sur-Mer offers several family-friendly walks. The region's generally gentle terrain, including marked walks through the pine forest and the car-free White Road through the dunes, makes it suitable for families. The long wooden boardwalk along the pebble beach also provides a unique and easy stroll.
Many trails in the Cayeux-sur-Mer area are suitable for dogs, especially those along the coast and through the dunes. However, it's always advisable to check local signage, especially in nature reserves like the Hâble d'Ault, where specific rules for dogs might apply to protect wildlife.
Hikers can discover several notable natural attractions. The Baie de Somme itself is a major highlight, and you can observe seals at the Pointe du Hourdel. The White Route of the Bay of Somme offers scenic views, and the nearby Ault Chalk Cliffs provide a dramatic coastal backdrop.
Yes, there are several excellent circular routes. For example, the Le Hourdel Loop is a popular moderate trail exploring the coastal area. Another option is the Observatory 4 – Hable d'Ault Observatory loop from Cayeux-sur-Mer, an easy route perfect for birdwatching.
The best time to hike in Cayeux-sur-Mer is generally during the spring, summer, and early autumn months when the weather is milder and more predictable. These seasons offer pleasant conditions for exploring the coastal paths, dunes, and marshes, and are ideal for wildlife observation.
Parking is generally available in and around Cayeux-sur-Mer, particularly near popular access points for the coastal paths and the town center. Specific parking areas can be found near the Pointe du Hourdel and other trailheads. Public transport options are also available to reach the area.
The hiking experience in Cayeux-sur-Mer is highly rated by the komoot community, with an average score of 4.4 stars from nearly 500 reviews. Hikers often praise the diverse coastal landscapes, the opportunities for seal and bird watching, and the well-maintained paths through dunes and marshes.
Absolutely. Cayeux-sur-Mer is located on a migratory bird route, making it an excellent spot for birdwatching. The Observatory 4 – Hable d'Ault Observatory loop from Cayeux-sur-Mer specifically leads to the Hâble d'Ault, a free bird sanctuary where you can observe numerous species.
Coastal hikes in Cayeux-sur-Mer typically follow the Sentier du Littoral, offering expansive views of the English Channel, the Baie de Somme, and leading through dunes and along the pebble beach. Inland routes might venture into the pine forest or across grassy plateaus, providing a different perspective of the region's diverse ecosystems, often with more sheltered paths.
Yes, some trails incorporate historical elements. For instance, the Blockhaus du Hourdel – Dunes loop from Le Hourdel leads through the dunes and past historical structures, offering a glimpse into the area's past alongside its natural beauty.


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