4.2
(84)
513
riders
63
rides
Gravel biking around Cers features routes that traverse flat to gently rolling terrain, often alongside canals and through nature reserves. The landscape is characterized by open areas, ponds, and waterways, with minimal elevation changes. Routes frequently follow established paths like the Canal du Midi, offering consistent surfaces suitable for gravel bikes. The region's geology includes features such as sinkholes, adding unique points of interest to some routes.
Last updated: July 3, 2026
4.2
(5)
41
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.6
(11)
51
riders
34.1km
02:13
160m
160m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.7
(3)
23
riders
60.3km
03:37
170m
170m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(4)
33
riders
48.5km
02:52
210m
210m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.0
(3)
26
riders
37.4km
02:12
150m
150m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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It is difficult to imagine that between Agde and Marseillan lies one of the largest protected wetland areas on the coast. The Bagnas nature reserve, the former delta of the Hérault, long exploited for salt and then for viticulture, is today a space entirely dedicated to fauna and flora. Between lagoons, salt marshes and reed beds, this changing landscape hosts hundreds of migratory bird species each year.
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It is difficult to imagine that waterways cross here like at a crossroads. Built in 1676 by engineer Pierre-Paul Riquet, the round lock of Agde is unique on the Canal du Midi: its circular shape and its three gates allow boats to choose between three different directions. Depending on their course, they head back towards Béziers, towards Agde, or towards the Étang de Thau. An ingenious river junction at the entrance to the town.
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It is nicknamed the "Bridge of Three Eyes". Three openings designed within the logic of the Canal du Midi: navigation, water drainage, and continuity of local circulation. A work from Pierre-Paul Riquet's project, to be discovered in the landscape between Vias and Agde.
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The port of Cabanes de Fleury is a marina located one mile from the mouth of the Aude river, on the left bank. Its peculiarity is that it is located in the heart of a wild site with undeniable charm.
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The round lock of Agde is the most original on the canal. Built in 1675-1676. It was put into operation in 1678 when the canal from Béziers to the Étang de Thau was opened to navigation. A particular situation, an original response: it was decided to build a round lock with three gates. The first opens towards the city of Sète and the Étang de Thau via a short passage on the Hérault; the second opens onto the canal coming from Béziers; the third opens onto the small canal which allows small boats to reach the city of Agde and its maritime port and then Grau d'Agde. The round lock was commissioned in 1678 when navigation opened between the Étang de Thau and Béziers. It originally measured 30 meters in diameter with a depth of 5.20 meters in the center. Thanks to this round lock and the low canal, small maritime boats can come onto the canal!
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It is the « Pont Saint-Joseph », but for a long time everyone has called it « The Three Eyes Bridge ». It sounds more poetic. The Three Eyes Bridge is a very pleasant structure: a main arch to let boats pass, and two smaller ones, one of which lets water through, and the other the towpath. It must not have been easy in the time of bargemen (towing by horses) because it was necessary to detach, then reattach when the obstacle had been passed. Here it is obvious, but it is the case for almost all the bridges on the Canal du Midi. It must be said that most of the time, the boat continued on its momentum and was reattached on the other side. Another peculiarity of this place is that there are two spillways on either side of the bridge.
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The spillways are 17th-century dressed stone structures located along the Canal du Midi, which allow the canal's water to be discharged during heavy rainfall or to be emptied for dredging work. Unlike the Canal du Midi, which is a UNESCO World Heritage site, these structures benefit from no protection measures. In order to protect them, the Agglo Hérault Méditerranée has been undertaking significant restoration work on these hydraulic structures in the municipalities of Agde, Vias, and Portiragnes for about twenty years.
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Wonderful, quiet and varied natural landscapes.
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There are over 80 gravel bike routes around Cers, offering a wide range of options for different skill levels. The komoot community has explored these trails over 500 times, providing valuable insights and ratings.
Yes, Cers offers a good selection of routes for beginners. You'll find 30 easy gravel bike trails that typically feature flat to gently rolling terrain, often alongside canals and through nature reserves, making them ideal for those new to gravel biking.
Gravel biking around Cers is characterized by routes that traverse flat to gently rolling terrain, frequently following established paths like the Canal du Midi. You'll encounter consistent surfaces suitable for gravel bikes, often alongside canals, through nature reserves, and past open pond areas. The region's geology also includes unique features such as sinkholes on some routes.
While many routes are moderate in length, Cers does offer longer options. For example, the Sinkhole of the Sweet Eye – Oeil-Doux Sinkhole loop from Villeneuve-lès-Béziers is a moderate 57.4 km (35.7 miles) trail, providing a more extended ride through varied landscapes.
Many gravel routes in Cers offer scenic views and pass by interesting landmarks. You can ride along the historic Canal du Midi, explore the Bagnas Nature Reserve, or see the Portiragnes lock and the impressive Orb Canal Bridge (Pont-canal de l'Orb). Routes also feature open pond areas and local windmills, such as on the Vendres Pond – Windmill loop from Sauvian.
Yes, many of the gravel bike trails in Cers are designed as loops, offering convenient circular routes. Examples include the Vendres Pond – Windmill loop from Sauvian, the Voie Verte Canal du Midi – Bagnas Nature Reserve loop from Portiragnes, and the Villeneuve lock – Canal du Midi loop from Sérignan.
The gravel biking routes in Cers are highly rated by the komoot community, with an average score of 4.2 stars from over 75 reviews. Riders often praise the consistent surfaces along the canal paths, the tranquil nature reserves, and the overall accessibility of the routes for a range of abilities.
While Cers is known for its generally flat to gently rolling terrain, there are 10 routes classified as difficult for those seeking more of a challenge. These routes may feature longer distances or slightly more varied surfaces, though significant elevation changes are not a primary characteristic of the region.
Absolutely. Several routes take you through beautiful natural areas. The Voie Verte Canal du Midi – Bagnas Nature Reserve loop from Portiragnes is a prime example, offering views of waterways and natural habitats within the reserve.
Given the region's characteristics of open areas and waterways, spring and autumn generally offer the most pleasant conditions for gravel biking in Cers, with milder temperatures and comfortable riding weather. Summer can be warm, while winter might bring cooler, potentially wetter conditions.
Yes, the region's geology includes interesting features like sinkholes. The Sinkhole of the Sweet Eye – Oeil-Doux Sinkhole loop from Villeneuve-lès-Béziers is a specific route that highlights this unique natural phenomenon, adding a distinct point of interest to your ride.
The numerous easy and moderate routes, particularly those along the flat and consistent paths of the Canal du Midi and through nature reserves, are generally well-suited for families. The minimal elevation changes make for a more relaxed and enjoyable experience for riders of all ages.


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