Réserve naturelle du lac de Grand-Lieu is a significant natural area in France, centered around the Lac de Grand-Lieu, which expands to over 6,000 hectares in winter, making it the largest natural lowland lake in the country. This region is characterized by its shallow waters, extensive reed beds, floating herbarium, and seasonally flooded meadows, creating a unique and largely flat landscape. These diverse habitats support a rich ecosystem, making the area a biodiversity hotspot and an ideal setting for several…
119
Routes
4.3
(326)
Average rating
2041
People visited

4.4
(39)
344
riders
47.6km
02:00
170m
170m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

4.3
(3)
105
riders
45.9km
01:55
220m
220m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

3.8
(4)
41
riders
26.2km
01:05
130m
130m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

5.0
(1)
24
riders
73.1km
02:57
320m
320m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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4.2
(20)
89
hikers
10.2km
02:35
30m
30m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

4.1
(7)
17
hikers
8.03km
02:02
20m
20m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

4.5
(4)
22
hikers
10.9km
02:47
40m
40m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

3.7
(3)
28
hikers
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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3.9
(11)
35
riders
23.2km
01:34
30m
30m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

4.2
(6)
28
riders
25.6km
01:43
60m
60m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

5.0
(2)
23
riders
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

3.0
(1)
15
riders
17.6km
01:03
90m
90m
Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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4.1
(29)
102
riders
75.6km
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.

5.0
(2)
13
riders
87.0km
05:20
290m
290m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4.5
(2)
7
riders
25.7km
01:42
100m
100m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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4.8
(13)
17
riders
38.9km
02:28
130m
130m
Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary.

3.8
(4)
21
riders
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

4.6
(5)
12
riders
25.4km
01:44
140m
140m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

4.9
(8)
19
riders
34.0km
02:18
140m
140m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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19
runners
12.7km
01:22
30m
30m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4.5
(2)
30
runners
6.90km
00:43
10m
10m
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.

13
runners
10.2km
01:06
20m
20m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Réserve naturelle du lac de Grand-Lieu offers various outdoor activities, including hiking, touring cycling, mountain biking, road cycling, gravel biking, and jogging. The region is known for its unique natural landscape and rich biodiversity, providing diverse routes for exploration.
Lac de Grand-Lieu expands to over 6,000 hectares (more than 14,800 acres) during winter, making it France's largest natural lowland lake. Its shallow depth, reaching a maximum of 3 meters (10 feet), supports a unique ecosystem with extensive reed beds and a vast floating herbarium.
The reserve is a significant bird sanctuary, hosting over 270 bird species, including a large colony of gray herons. It is also home to more than 550 plant species, around 50 mammal species like otters, and 30 fish species, such as the European eel. It serves as a crucial stopover on a major migratory route.
Numerous hiking trails are available around Réserve naturelle du lac de Grand-Lieu, catering to different fitness levels. A main circuit of 45 miles (73 km) allows visitors to explore diverse landscapes. For more options, consult the Hiking around Réserve naturelle du lac de Grand-Lieu guide.
Yes, the reserve offers easy hikes suitable for families, such as the "Wooden Footbridges Trail loop" and "Hiking loop from La Chevrolière." These paths are accessible for various skill levels. More information can be found in the Family-friendly hikes around Réserve naturelle du lac de Grand-Lieu guide.
The region is well-suited for cycling due to its generally flat terrain. Routes for touring cycling, mountain biking, and road cycling traverse reed beds, vineyards, and traditional villages. Options range from easy, paved routes to more challenging paths with unpaved segments. Explore guides like Cycling around Réserve naturelle du lac de Grand-Lieu for more details.
Observation points include the Maison du Lac de Grand-Lieu in Bouaye, which offers ecological trails leading to viewpoints like the former hunting lodge of perfumer Guerlain. Other sites are the Maison des Pêcheurs and ornithological observatory in Passay, and the bell tower of the Saint-Léobin church in Saint-Lumine-de-Coutais.
The terrain around Lac de Grand-Lieu is largely flat, with low elevation changes. It features diverse habitats including open water, extensive reed beds, a vast floating herbarium, seasonally flooded meadows, and woodlands. This makes it suitable for activities like cycling and easy hiking.
Réserve naturelle du lac de Grand-Lieu is a popular destination on komoot, with more than 35,000 visitors having shared their experiences. Routes in the region have an average rating of 4.39 out of 5 stars, indicating high user satisfaction.
Yes, komoot offers several guides for the region, covering various activities and interests. Examples include Family-friendly hikes, Cycling around, and MTB Trails. These guides provide detailed information and route suggestions for exploring the area.
The Réserve naturelle nationale du lac de Grand-Lieu is managed by the Société Nationale de Protection de la Nature (SNPN). Information about the reserve can be found on the SNPN website: snpn.fr/reserve-du-lac-grand-lieu.
For inquiries about the Réserve naturelle nationale du lac de Grand-Lieu, you can contact the managing body, the Société Nationale de Protection de la Nature (SNPN). The phone number for inquiries is +33240326281.

