4.5
(82)
624
riders
33
rides
Gravel biking around Petit-Mars, located in the Loire-Atlantique region of France, offers diverse terrain for outdoor enthusiasts. The area features a mix of paved and unpaved surfaces, providing varied landscapes that blend rural charm with natural settings. Cyclists can explore routes that traverse wild natural landscapes and waterways, characteristic of the broader regional landscape, including features like the Port de la Rivière and the Plan d'eau du Tertre Rouge. The terrain includes moderate ascensions and scenic trails suitable for different…
Last updated: July 3, 2026
5.0
(6)
47
riders
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.1
(7)
29
riders
39.8km
02:04
120m
120m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.8
(4)
28
riders
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
4.6
(5)
35
riders
77.5km
03:50
190m
190m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
21
riders
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
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Nicknamed the «pearl of the Erdre», the port of Sucé-sur-Erdre is an unmissable charming stopover where lively terraces and pleasure boats coexist in a green and peaceful setting. It is the ideal starting point for strolling along the quays or taking a trip on the water, to discover one of the most beautiful rivers in France.
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Even at 6 a.m. super pleasant and very smooth
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After a few kilometers, stopping at this guinguette is a pure pleasure of relaxation
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Very comfortable track to do, the trees provide shade and freshness, freshness also provided (on certain locks) to enjoy a very refreshing drink
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Very pretty, relaxing. Possibility of refueling by bike.
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Also known as the "basin," the port of Nort-sur-Erdre is a lively, historic neighborhood that's a great place to stop off. At the foot of the Saint-Georges Bridge, which separates the wild Erdre from the navigable Erdre, the marina is now a popular place for walking and fishing. Free Wi-Fi access near the Tourist Office Contact the harbor master's office for an extended stay; the first two nights are free. Open year-round Type of facility: Slipway - River stopover - Pontoon - Marina Payment methods: Bank and postal checks Access location: Nort-sur-Erdre train station: 1 km Languages spoken: French Facilities: Picnic area - Restrooms - Services - Playground
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The construction of Port Mulon Castle dates back to the 19th century. Of its various owners, it primarily preserves the memory of Prosper Coinquet. Born in 1825 in Nantes, Prosper Coinquet was mayor of Nort-sur-Erdre twice, from 1859 to 1874, and again from 1877 to 1892. He was also a general councilor for the Loire-Inférieure department from 1883 to 1887. This lawyer by training was also a great lover of the arts. He was himself a musician and poet. He composed numerous songs and waltzes that enjoyed considerable regional success. He dedicated one of his waltzes, simply titled "Le port Mulon," to his castle. Prosper Coinquet chaired or was a member of several musical and literary societies. It was therefore only natural that he decided to make the château the setting for evenings dedicated to the arts. Readings and concerts were held in the park or in the reception hall. Nantes artists invited to perform came by way of the Erdre River. The setting, its tranquil riverbank, and its magnificent park wooded with rare species, thus retain the imprint of the music that was performed there until 1892. That year, Prosper Coinquet died at home. Since 2006, music has once again resonated in the park's foliage. Indeed, at the end of June, the venue hosts the La Nuit de L'Erdre festival. Today, the Château de Port Mulon and its park are managed by the municipality of Nort-sur-Erdre. A reception hall can be rented from the town hall, whether for private or professional events. You can also take yoga classes at the château. As for the Nantes Atlantique improvisation league, it has made it its headquarters. Finally, since 2017, the place has become a coworking space whose success continues unabated. As for the park, it's a place where, in addition to enjoying its vast spaces and magnificent trees, you can indulge in an orienteering course. Twenty markers are scattered throughout, and by exploring them, you'll learn much more about the treasures it contains. During your stroll, you'll undoubtedly encounter riders who enjoy riding their horses there. And if, at nightfall, you spot the fluttering shadows of numerous bats, don't be surprised. For several years, the castle and grounds have been havens for these nocturnal animals.
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Nestled along the Nantes-Brest Canal, the Écluse de la Tindière lodge welcomes hikers and cycle tourists looking for comfortable overnight stays in a relaxing setting. The rooms offer stunning views of the canal!
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There are over 40 gravel bike trails around Petit-Mars, offering a diverse range of options for cyclists. These routes cater to various skill levels, with 10 easy, 17 moderate, and 15 difficult trails to choose from.
The gravel bike routes in Petit-Mars feature a varied terrain, blending paved and unpaved surfaces. You'll encounter scenic trails through 'wild nature,' rural landscapes, and areas alongside waterways, characteristic of the Loire-Atlantique region. Expect moderate ascensions and diverse landscapes.
Yes, Petit-Mars offers several easy gravel bike trails perfect for beginners. One such route is the Tindière Lock – Rabinière lock loop from Casson, which is 38.3 km long and provides a gentle introduction to the region's gravel biking.
Many gravel routes in the Petit-Mars area pass by interesting landmarks and natural features. You might encounter the Sucé-sur-Erdre marina, the historic Tindière Lock, or the Port of Nort-sur-Erdre. Some trails also follow sections of the Old Railway Line from Treillières to La Chapelle-sur-Erdre.
Absolutely. For experienced riders seeking a challenge, the Sucé sur Erdre bridge and port – Oudon Keep loop from Sucé-sur-Erdre is a difficult 116.2 km trail that takes you through waterways and rural areas. Another challenging option is the Quay at Sucé-sur-Erdre – Haut-Gesvres Castle loop from Sucé-sur-Erdre, a 55.4 km path with significant elevation changes.
The gravel biking routes around Petit-Mars are highly rated by the komoot community, with an average score of 4.6 stars from over 80 reviews. Cyclists often praise the varied landscapes, the mix of paved and unpaved sections, and the opportunity to explore the region's rural charm and waterways.
Yes, many of the gravel bike routes around Petit-Mars are designed as loops, allowing you to start and end at the same point. For example, the Lock 11 — La Prée – Port of Blain loop from Écluse de la Rabinière is a popular 43.3 km circular trail.
While specific routes are not detailed to pass directly by all lakes, the region features several bodies of water. You can find highlights like the Vioreau Reservoir Dam and the Pond of Parc du Charbonneau in the broader area, suggesting opportunities to incorporate water views into your rides.
Petit-Mars offers enjoyable gravel biking throughout much of the year. The region's climate generally allows for pleasant riding conditions, though spring and autumn often provide the most comfortable temperatures and vibrant scenery. Always check local weather forecasts before heading out.
Yes, there are 17 moderate-difficulty gravel routes around Petit-Mars. A good example is the Lock 11 — La Prée – Paudais lock loop from Nort-sur-Erdre, a 77.5 km route that offers a balanced challenge with varied landscapes.
Petit-Mars and its surroundings are indeed known for their 'wild nature' and scenic trails. The routes are designed to take you through diverse landscapes, allowing you to experience the natural beauty and rural charm of the Loire-Atlantique region, often alongside waterways.


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