4.5
(2)
22
riders
4
rides
Gravel biking around Sercus offers routes through the Flemish countryside, characterized by mixed surfaces and varied terrain. The region, part of Houtland, features an elevation range from 41 to 70 meters, with Mont Cassel, a prominent hill at 176 meters, providing a notable climb. Routes combine paved roads with unpaved sections, traversing rural landscapes. The area provides diverse options for gravel cyclists.
Last updated: July 3, 2026
6
riders
47.0km
02:48
200m
200m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(1)
4
riders
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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7
riders
41.0km
02:32
190m
190m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
3
riders
39.2km
02:25
310m
310m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
2
riders
47.5km
02:52
140m
140m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Beautiful cycle path along the pond landscape, EV5.
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Cassel is a fortified town on top of a hill and not far from the Belgian border with Poperinge (20 km). Beautiful views, cozy alleys, unique estaminets and a richly furnished museum in a historic mansion. This is in short what Cassel brings you, once you have conquered the slope from whichever side. A lot of variety with a bit of history and culture, a lot of nature and local gastronomy. Enjoyment is the motto. Highlights are there for the taking in Cassel. For some, the Musée de Flandre will be the top attraction, for others the estaminets and still others just come for the cobblestone climb. Enjoy Cassel.
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The Porte de Dunkerque dates back to the Middle Ages and served as one of the main gateways to the fortified city of Cassel. The gate is built in a robust medieval style, with thick stone walls and an imposing arch marking the passage. The architecture reflects the military and strategic function of the gate.
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The Remparts de Cassel are the historic fortifications that surround the charming town of Cassel, perched high on Mont Cassel in French Flanders. These ancient ramparts bear witness to the region’s rich and tumultuous history and offer visitors a fascinating glimpse into the past. Cassel’s elevated position on Mont Cassel, one of the highest points in the area, made it a strategically important stronghold for a long time. It offered excellent views over the Flemish plain, making it ideal for defensive purposes. The first fortifications date back to the Middle Ages, when walls and gates were built to protect the town from invasions and sieges. Cassel was often the scene of military confrontations due to its strategic importance. In the 17th century, the famous French military engineer Sébastien Le Prestre de Vauban strengthened the fortifications of Cassel. Although not as extensive as his other projects, these improvements helped to strengthen the town.
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There are over 7 gravel bike trails available around Sercus, catering to various skill levels from easy to difficult. These routes allow you to explore the diverse Flemish countryside.
Yes, Sercus offers options for beginners and families. An easy route to consider is the Old bridge – The old Préavin bridge. loop from Hazebrouck, which is approximately 29.5 km long with minimal elevation gain, making it a gentle ride through the rural landscape.
For experienced riders seeking a challenge, routes like the Cassel Village – Cassel loop from Cassel offer significant climbs, reaching over 300 meters of elevation gain. The climb to Mont Cassel itself is a notable feature, providing panoramic views as a reward.
Yes, many of the gravel bike routes around Sercus are designed as circular loops, allowing you to start and finish at the same point. Examples include the Château de la motte au bois – The Thiennes Bridge loop from Roquetoire, which is a popular 47 km trail.
The gravel bike trails around Sercus traverse the picturesque Flemish countryside, characterized by mixed surfaces, tranquil rural roads, and historical forest cover within the Houtland region. You'll encounter charming villages, farmlands, and the occasional climb to prominent hills like Mont Cassel, offering beautiful views.
Many routes offer glimpses of the region's rich history and charm. You can explore the fortified Cassel Village with its traditional estaminets and the historic mill on Cassel Hill. Other highlights include the The Thiennes Bridge and the Porte d'Aire.
The area is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the diverse terrain, which combines paved roads with unpaved sections, and the opportunity to explore the tranquil Flemish countryside and historical sites.
The region's varied terrain is enjoyable throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery. While winter riding is possible, be prepared for potentially muddier conditions on unpaved sections.
Yes, some routes venture near local waterways. For instance, the Saint-Venant Marina – Passerelle de la Lys loop from Haverskerque leads through the flatlands near the Lys river, offering a different scenic experience.
While Sercus itself is a small commune, nearby larger towns like Hazebrouck or Cassel may offer better public transport connections. From these points, you can often find routes that start directly or are a short ride away, such as the Drève du Milieu – Château de la motte au bois loop from Hazebrouck.
Parking availability varies by starting point. For routes beginning in or near villages, you can often find public parking areas. For example, if starting a route from Cassel, there are parking options within the village. It's advisable to check specific route details for recommended parking locations.


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