4.5
(120)
782
hikers
35
hikes
Hiking around Grand Réservoir de Vioreau offers a blend of aquatic and terrestrial environments, centered around the largest reservoir in Loire-Atlantique. The region features expansive lake views bordered by the Vioreau forest, providing largely shaded routes with minimal elevation changes. Trails often follow historical features such as the Nantes-Brest Canal and the Rigole des Ajaux, which feeds the canal. The terrain is generally accessible, making it suitable for easy hiking trails.
Last updated: May 27, 2026
5.0
(1)
11
hikers
7.23km
01:52
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
2
hikers
7.54km
01:57
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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5.0
(1)
8
hikers
5.50km
01:26
40m
40m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
3.0
(1)
3
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.6
(5)
49
hikers
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
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The west bridge of Lake Voireau offers a beautiful, unobstructed view of the reservoir. The largest body of water in Loire-Atlantique, this lake stretches through the heart of the forest. Its wooded banks and landscaped beaches make it a pleasant stopover for a nature break or a swim.
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A perfect place to relax or have a picnic. You can cross the Erdre River to take a path opposite.
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Very beautiful place, banks of the Erdre below. Nice place to relax.
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This archway is accessible, but the following ones toward Nort-sur-Erdre are not, due to ongoing safety work. A beautiful spot down below for a picnic on the banks of the Erdre.
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The Ajaux channel connects the Riaillé lakes (La Provostière and La Poitevinière) to the large Vioreau Reservoir. The water thus transported supplies the Nantes-Brest canal.
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The Provostière pond, with a surface area of 73 ha, is connected to the Vioreau lake by the Rigole des Ajaux. This complex is part of the supply system of the Nantes-Brest canal. Its hydraulic management is ensured by the Loire-Atlantique Department, which has owned it since 2008. A 5.5 km path on which a bird observatory is located allows you to go around the pond in about 1h30.
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July 25, 1944, shortly after 3 p.m., a Mosquito type plane, a light and fast twin-engine, appeared in the sky of Riaillé, followed a few seconds later by two German fighter planes. Arriving above the hamlet of l'Enclose, one of the fighters gained altitude and dove on the Canadian plane, riddling it with bullets. After starting a curve, the burning Mosquito crashed very close to the Provostière pond. The debris littered the ground for about fifty meters, the fire and the explosion of the ammunition made it impossible to approach. When the fire died down, the inhabitants rushed to the scene and found the charred bodies of the pilot and the navigator. They were identified as Lieutenants Burgess and McPherson. The Germans, who came to the scene, told the mayor that he could bury the bodies but without an official ceremony. However, the occupier's orders were not respected. The bodies were wrapped in sheets and transported to a nearby farm, the village carpentry made the coffins. The next day, a religious ceremony was held in the parish church in the presence of many Riaillé residents and wreaths of flowers covered the coffins. The procession then headed to the cemetery under the supervision of German soldiers who did not intervene. For 80 years, these two Canadian officers have been resting in the Riaillé cemetery. Their tomb is regularly maintained and decorated with flowers by the UNC-Riaillé Mémoire association but also by anonymous people who thus perpetuate the memory of their sacrifice. https://www.echoancenis.fr/actualite-4422-riaille-le-25-juillet-1944-deux-aviateurs-canadiens-etaient-abattus-dans-le-ciel-de-riaille
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There are over 10 easy hiking trails around Grand Réservoir de Vioreau, offering accessible paths with minimal elevation changes. In total, the region features 35 hiking routes, with 12 specifically categorized as easy.
Easy hikes around Grand Réservoir de Vioreau feature generally accessible terrain with minimal elevation changes. You'll find paths through forested shores, alongside the lake, and following historical canal systems like the Rigole des Ajaux. Many routes are shaded, providing a pleasant experience.
Yes, many easy trails around Grand Réservoir de Vioreau are circular. For example, the Aqueduc du Gué de la Roche – Le Gué de la Roche loop from Le Fertais offers a pleasant 4.5 km loop, perfect for a relaxed outing.
Easy hikes often lead past significant landmarks. You can explore the historical Vioreau Reservoir Dam, built in 1835, or walk along the Arcades Trail near Vioreau, which follows the historic 'food channel' for the Nantes-Brest Canal. The West bridge at Lac de Vioreau also offers scenic views.
Yes, the easy hiking trails are generally very suitable for families. With minimal elevation changes and often shaded paths through wooded areas, they provide a comfortable and enjoyable experience for all ages. Many routes offer opportunities for nature observation, especially birdwatching.
Yes, the trails around Grand Réservoir de Vioreau are generally dog-friendly. It's always recommended to keep your dog on a leash, especially in areas with wildlife or near other visitors, and to clean up after them. The diverse landscapes offer plenty for your canine companion to enjoy.
The Grand Réservoir de Vioreau is enjoyable for hiking throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery. Summer provides the added benefit of supervised swimming at the lake, but trails can be busy. The largely shaded routes make it comfortable even on warmer days.
Yes, the Grand Réservoir de Vioreau area is well-equipped with amenities. You'll find shaded picnic tables, sanitary facilities, and even a snack bar, providing refreshing settings for open-air lunches and breaks during your hike.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 100 reviews. Hikers often praise the tranquil natural beauty, the extensive lake views, and the well-maintained, accessible paths that make for a relaxing outdoor experience.
Absolutely. Many trails follow the historical Nantes-Brest Canal system. For instance, the Aqueduc du Gué de la Roche – Arcades of the Gué de la Roche loop from Château de Lucinière is an easy 6.6 km route that allows you to explore the impressive aqueduct and its arcades, which are part of the canal's water supply system.
Yes, parking is generally available near the trailheads for easy hikes around Grand Réservoir de Vioreau. The region is well-equipped for visitors arriving by car, with designated parking areas often located conveniently close to popular starting points for walks.
The Grand Réservoir de Vioreau is known for its rich biodiversity, especially birdlife. You might spot various bird species, including migratory birds like teal and osprey, particularly if you visit the ornithological observatory. The forested areas also host other local wildlife.


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