4.5
(86)
344
riders
52
rides
No traffic gravel bike trails around Saint-Mars-De-Coutais traverse a landscape characterized by the expansive Lac de Grand-Lieu, its surrounding marshes, and traditional bocage. The region features a network of paths through vineyards, along the river Tenu, and into shaded woods. These varied terrains, including sandy paths and unpaved trails, offer diverse surfaces suitable for gravel biking.
Last updated: May 22, 2026
4.1
(27)
91
riders
75.7km
04:39
220m
220m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.6
(9)
38
riders
50.8km
03:09
200m
200m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
11
riders
84.3km
05:10
290m
290m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
11
riders
36.8km
02:13
180m
180m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Saint-Mars-De-Coutais
You have to see the machine for yourself. Describing it is difficult.
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The machines are difficult to describe, you have to try them out for yourself.
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This small port has a lot of charm and is very photogenic even though our visit took place under a very gray sky. As an anecdote, a regular visitor told us that the huts were all painted this way because the fishermen and oyster farmers did not want to throw away the leftover paint used for the boats.
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Nice to explore perched on a bike. Be careful, however, to ride slowly to pass joggers.
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Beautiful panorama from this spot, we can see the expanse of the lake as well as Nantes in the background
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Superb walk along the lake
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There are over 45 no-traffic gravel bike trails around Saint-Mars-De-Coutais, offering a wide range of options for all skill levels. This includes 10 easy, 27 moderate, and 9 difficult routes, ensuring a suitable ride for everyone looking to explore the region's quiet landscapes.
The no-traffic gravel routes around Saint-Mars-De-Coutais offer a diverse mix of terrain. You'll encounter natural, unpaved trails through marshes, traditional bocage (hedged fields), and vineyards. Expect 'chemins creux' (hollow paths), 'sentiers ombragés' (shaded paths) through woods like Bois Charrette, and 'sentiers sableux' (sandy paths) through prairies, especially around the Marais de Grand-Lieu. This varied landscape is perfect for gravel biking.
Yes, for experienced gravel bikers seeking longer, traffic-free adventures, routes like the Gravel path in the forest – Filée Park Pond loop from Bouaye offer challenging distances up to 84.3 km. Another option is the Vallon de la Chaussée – Port de l'Halbrandière loop from Sainte-Pazanne, which covers 75.7 km of varied terrain.
Many no-traffic gravel routes will lead you to the stunning Lac de Grand-Lieu, one of France's largest natural lakes, known for its rich birdlife. You can also explore the surrounding marshes, bocage, and vineyards. The Etang de Roche Ballue is another beautiful lake highlight you might encounter.
While the focus is on natural landscapes, some routes may pass near charming rural villages. You might also spot the Bethlehem Chapel. For unique experiences, consider routes that incorporate a Loire River Ferry Crossing, offering a different perspective of the region.
The komoot community highly rates the gravel biking experience here, with an average score of 4.5 out of 5 stars from 58 reviews. Riders frequently praise the tranquility of the routes, the diverse natural landscapes, and the opportunity to explore the region away from car traffic, especially around the Lac de Grand-Lieu and its surrounding marshes.
Yes, the region offers several easy and moderate routes suitable for families looking for quiet, car-free gravel biking. These trails often pass through shaded paths and prairies, providing a safe and enjoyable environment for all ages. Look for routes with lower elevation gain and shorter distances for a comfortable family outing.
Many of the natural trails and paths around Saint-Mars-De-Coutais, especially those through forests and prairies, are generally dog-friendly. However, it's always best to keep your dog on a leash, particularly in areas with wildlife or near grazing cattle, and to check local regulations for specific nature reserves like the Lac de Grand-Lieu wetlands.
Absolutely. Many of the gravel routes in the area are designed as loops, allowing you to start and end at the same point. For example, the Port of La Morinière – Pirmil Railway Bridge loop from La Chevrolière is a moderate 52 km circular route, perfect for a day trip without retracing your steps.
Parking is typically available in or near the starting points of many routes, often in the villages or designated areas close to trailheads. For routes around Lac de Grand-Lieu, look for parking options in towns like Saint-Mars-De-Coutais or Sainte-Pazanne, which serve as common access points to the lake's perimeter trails.
Spring and autumn are generally ideal for gravel biking in Saint-Mars-De-Coutais, offering pleasant temperatures and beautiful scenery. Spring brings blooming nature, while autumn showcases vibrant foliage. Summer can be enjoyable, but be mindful of warmer temperatures, especially on exposed sections. Winter riding is possible, but some paths might be muddier.
Yes, some routes in the area will provide access to the Port Faissant, which is known for its remarkable viewpoints and panoramas over the surrounding landscapes, including the Lac de Grand-Lieu. These routes offer excellent photo opportunities and a chance to appreciate the region's natural beauty.


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