4.5
(156)
7,056
runners
408
runs
Jogging around Réserve naturelle du lac de Grand-Lieu offers access to a unique wetland ecosystem, centered around France's largest natural lowland lake. The region is characterized by its expansive lake, which fluctuates significantly in size, surrounded by diverse habitats including extensive reedbeds, floating seagrass, and floodplains. The terrain is generally flat, with minimal elevation changes, making it suitable for various running abilities. A network of trails provides opportunities to explore the perimeter of this significant natural reserve.
Last updated: July 11, 2026
13
runners
10.2km
01:06
20m
20m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
19
runners
12.7km
01:22
30m
30m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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4.5
(2)
30
runners
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
80
runners
10.2km
01:06
20m
20m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
runners
5.62km
00:36
20m
20m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around Réserve naturelle du lac de Grand-Lieu
The largest natural plain lake and the second largest ornithological reserve in France, Lake Grand-Lieu offers magnificent lakeside landscapes. Here, you have to get off your bike to get as close as possible to its waters.
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Magnificent view of the lake 👌
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It's quiet and it rolls well Perfect for a quiet ride
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Arriving from La Chevroliere in the direction of Pont Saint Martin, turn off to cross the Ognon with the Bac in spring and summer, it's more pleasant
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Very good spot for a panoramic view of the lake. Bird observatory on the path on the right
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Shaded path, very peaceful.
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A very large lake not far from Nantes. Accessible on its outline by lots of small roads.
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There are over 370 running routes around Réserve naturelle du lac de Grand-Lieu, offering a wide variety of options for all fitness levels. The komoot community has explored these trails over 5,800 times, providing an average rating of 4.5 stars.
The terrain is generally flat with minimal elevation changes, making it suitable for various running abilities. You'll find a mix of open paths, sections near the lake, and trails through diverse habitats like reedbeds and floodplains. Many paths are easily accessible or mostly paved.
Yes, the region offers 26 easy running routes perfect for beginners or those looking for a relaxed jog. These trails typically have minimal elevation gain and cover shorter distances, allowing you to enjoy the natural beauty at a comfortable pace.
Absolutely. For more experienced runners, there are 47 difficult routes available. Additionally, the main circuit known as the "Tour du Lac de Grand-Lieu" is a hiking trail approximately 73 km long, which can be adapted for longer, more challenging runs around the lake's perimeter.
The landscapes around Lac de Grand-Lieu transform with the seasons, offering different visual experiences throughout the year. Spring and autumn are particularly pleasant for running due to milder temperatures and vibrant natural displays. The lake's size fluctuates significantly, from around 6,000 hectares in winter to 1,000 hectares in summer, which changes the scenery you'll encounter.
While the Réserve naturelle du lac de Grand-Lieu is a protected area, many trails around its perimeter are accessible. It's best to check local regulations for specific paths regarding dogs, and always keep them on a leash to protect the abundant wildlife, especially during nesting seasons.
Yes, many of the easier and moderate routes are suitable for families. The generally flat terrain and accessible paths make it enjoyable for all ages. For example, the Running loop from Réserve naturelle régionale du lac de Grand-Lieu is a moderate 5.4 km path that could be a good option for a family outing.
As you run, you can encounter charming villages and historical sites. Notable points include the fishing village of Passay in La Chevrolière, the 9th-century Carolingian abbey church in Saint-Philbert-de-Grand-Lieu, and elevated viewpoints between Saint-Lumine-de-Coutais and Saint-Mars-de-Coutais offering panoramic views over the vast reedbeds. The bell tower of the Saint-Léobin church in Saint-Lumine-de-Coutais also provides scenic vistas.
Yes, many of the routes are circular, allowing you to start and finish at the same point. For instance, the Étang de Villegaie loop from La Chevrolière is a popular 10.2 km circular route, and the Pleasant little pond loop from Saint-Aignan-Grandlieu is an 8.9 km circular trail.
The area is highly rated by the komoot community, with an average score of 4.5 stars from 119 reviews. Reviewers often praise the unique wetland ecosystem, the diverse habitats, and the peaceful, flat trails that offer an immersive experience in a significant natural and ecological site.
Yes, the Maison des Pêcheurs and the Maison du Lac de Grand-Lieu provide insight into the lake's history, fishing traditions, and natural heritage. These can be educational stops along a longer run or visited separately to deepen your understanding of this unique reserve. For more information, you can visit grandlieu-tourisme.fr.
The Réserve naturelle du lac de Grand-Lieu is located near Nantes. While specific public transport links directly to trailheads might vary, you can typically reach the surrounding towns and villages by local bus services, from which you can then access the trail network. It's advisable to check local transport schedules for the most up-to-date information.


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