4.3
(1488)
9,576
riders
343
rides
Touring cycling around Lac De Grand Lieu offers diverse landscapes, centered on France's largest natural lowland lake. The region features a unique ecosystem with extensive reed beds, meadows, and open water areas, which change with the seasons. Surrounding the lake, cyclists encounter a mosaic of marshes, vineyards, agricultural lands, and picturesque villages, providing varied backdrops for routes. The terrain is generally flat, with low elevation changes, making it accessible for various cycling experiences.
Last updated: October 14, 2026
4.0
(25)
154
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.2
(6)
31
riders
25.6km
01:43
60m
60m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

4.1
(13)
36
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
4.0
(4)
17
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.0
(1)
15
riders
17.8km
01:04
90m
90m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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On a sunny day, the sunlight allows for amazing colours.
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Join the port of La Morinière for a break by the Acheneau.
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Starting point for visiting the nature reserve
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Superb walk along the lake
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perfect path for mountain biking while visiting the beautiful landscapes of the region.
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I went there to take a dip but the site was littered with rubbish (cake wrappers, chips, candy, tissues, McDonald's bags, pizza boxes, etc.) right down to the water. Exceptional because it was the day after the music festival or just a habit? Sunday was also packed with people (obviously)
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It's quiet and it rolls well Perfect for a quiet ride
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There are over 370 touring cycling routes around Lac De Grand Lieu, offering a wide variety of experiences. These routes cater to different skill levels, from easy, mostly paved paths to more challenging segments that may include unpaved sections.
The terrain around Lac De Grand Lieu is generally flat with low elevation changes, making it accessible for various cycling experiences. You'll encounter diverse landscapes, including extensive reed beds, meadows, vineyards, agricultural lands, and picturesque villages, providing a constantly changing backdrop for your rides.
Yes, Lac De Grand Lieu offers many easy touring cycling routes perfect for beginners and families. Over 230 routes are classified as easy, featuring mostly paved surfaces and gentle gradients. An example is the Lake Grand-Lieu – Port de Passay loop from Saint-Philbert-de-Grand-Lieu, an easy 28.4 km path offering scenic lake views.
The region is rich in natural beauty and historical sites. You can expect to see the vast expanse of Lac De Grand Lieu itself, which is France's largest natural lowland lake and a significant ornithological reserve. Notable landmarks and viewpoints include the Lake Grand-Lieu, Pierre Aiguë site, the Lake path between Bouaye and Saint Aignan de Grand Lieu, and the historic Port de Passay. The area also features vineyards, marshes, and traditional villages.
Yes, many touring cycling routes around Lac De Grand Lieu are circular, allowing you to start and end your journey in the same location. For instance, the The Sharp Stone – Gravel path in the forest loop from Saint-Lumine-de-Coutais is a moderate 54 km circular route that takes you through forested areas.
The landscape around Lac De Grand Lieu transforms with the seasons. While cycling is enjoyable for much of the year, spring and autumn offer pleasant temperatures and beautiful scenery. In winter, the lake expands significantly, while in summer, it recedes, revealing more of its contours. Consider visiting when the weather is mild to best enjoy the diverse ecosystems and birdlife.
For those looking for longer rides, routes like the The Sharp Stone – Gravel path in the forest loop from Saint-Lumine-de-Coutais cover approximately 54 km. Another option is the Le Tenu – Chemin des Vignes Perdues loop from Port-Saint-Père - Saint-Mars, which is a moderate 41.3 km route.
The area is highly rated by the komoot community, with an average score of 4.4 stars from over 1300 reviews. Reviewers often praise the diverse landscapes, the peaceful atmosphere, and the variety of routes that cater to different abilities. The unique ecosystem, including the extensive reed beds and birdwatching opportunities, is also frequently highlighted.
Yes, many routes offer a mix of environments. For example, the Port de l'Halbrandière – Gravel path in the forest loop from Bouaye is a 25.1 km trail that leads through forested areas and along the lake's edge, providing varied scenery.
Absolutely. The region surrounding Lac De Grand Lieu includes vineyards, particularly those of Muscadet. Many touring cycling routes weave through these agricultural lands, offering picturesque views of the grapevines. The Le Tenu – Chemin des Vignes Perdues loop from Port-Saint-Père - Saint-Mars is an example of a route that takes you through vineyard areas.
Yes, Lac De Grand Lieu is known for its rich birdlife. The Maison des Pêcheurs (Fishermen's House) and Ornithological Observatory in Passay are excellent spots for birdwatching and learning about the lake's ecosystem. The Church Bell Tower in Saint-Lumine-de-Coutais also provides elevated views of the lake and its surroundings.
The duration varies greatly depending on the route length and your pace. Easy routes like the The Acheneau – Le Tenu loop from Bouaye (17.6 km) can be completed in under 2 hours. Longer, moderate routes, such as the The Sharp Stone – Gravel path in the forest loop from Saint-Lumine-de-Coutais (54 km), typically take around 3.5 to 4 hours.


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