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France
Pays de la Loire
Ancenis

Grand Réservoir de Vioreau

The best road cycling routes around Grand Réservoir de Vioreau

4.0

(2)

126

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26

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Road cycling around Grand Réservoir de Vioreau offers diverse landscapes centered around the largest reservoir in the Loire-Atlantique department. The terrain features expansive lake views, bordered by the Vioreau forest, and includes the historic Vioreau Dam. Many routes are relatively flat with minimal elevation changes, providing accessible paved surfaces suitable for road cyclists.

Best road cycling routes around Grand Réservoir de Vioreau

  • The most popular road cycling route is Lake Vioreau – West bridge at Lac de Vioreau loop from…

Last updated: May 21, 2026

9

riders

#1.

Grand Réservoir de Vioreau – Lake Vioreau loop from La Bolinière

19.3km

00:57

140m

140m

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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Easy

Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.

Moderate
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4

riders

Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

Easy

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

Moderate

Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.

Moderate
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Tips from the Community

Seb
December 2, 2025, Le mont Juillet

Calvary with a beautiful view

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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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great ride

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Also known as the "basin," the port of Nort-sur-Erdre is a lively, historic neighborhood that's a great place to stop off. At the foot of the Saint-Georges Bridge, which separates the wild Erdre from the navigable Erdre, the marina is now a popular place for walking and fishing. Free Wi-Fi access near the Tourist Office Contact the harbor master's office for an extended stay; the first two nights are free. Open year-round Type of facility: Slipway - River stopover - Pontoon - Marina Payment methods: Bank and postal checks Access location: Nort-sur-Erdre train station: 1 km Languages spoken: French Facilities: Picnic area - Restrooms - Services - Playground

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From the bridge, you can enjoy a beautiful, unobstructed view of the Saint-Léger-de-Joué church, punctuated by the sound of the river. The bridge and washhouse date back to the 13th century.

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What we'd heard about Brittany was that it's supposed to have lots of forests, a special kind of people, and nature beyond nature. But we weren't expecting such a beautiful little town, and as for the special Bretons – they're just super friendly!

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The Grand Réservoir de Vioreau, located near Joué-sur-Erdre in the Pays de la Loire region, is an impressive body of water covering approximately 900 hectares. Originally built to regulate the flow of the Erdre and ensure the water supply to the surrounding areas, the reservoir now provides a magnificent setting for mountain biking. The surrounding trails offer varied terrain, from smooth lakeside paths to challenging and rugged sections through the nearby forests.

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The surroundings of the dam are currently under construction and closed to the public (6/28/24)

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Frequently Asked Questions

How many road cycling routes are available around Grand Réservoir de Vioreau?

There are over 25 road cycling routes available around Grand Réservoir de Vioreau, catering to various skill levels. You'll find a good mix of easy and moderate options, with a few more challenging rides for experienced cyclists.

What is the typical terrain like for road cycling in this area?

The terrain around Grand Réservoir de Vioreau is generally characterized by relatively flat or minimal elevation changes, making it ideal for road cycling. Routes often feature paved surfaces, offering continuous views of the expansive lake and winding through the shaded

Vioreau forest. You'll experience a diverse landscape moving between open lakeside stretches and tree-lined routes.

Are there road cycling routes suitable for beginners or those looking for an easy ride?

Yes, Grand Réservoir de Vioreau offers several easy road cycling routes perfect for beginners or a relaxed ride. An excellent option is the Lake Vioreau – West bridge at Lac de Vioreau loop from La Bolinière, which is about 19 km long with minimal elevation gain, offering continuous lake views.

What kind of challenges can I expect on more difficult road cycling routes?

While many routes are relatively flat, some moderate options offer a bit more challenge. For instance, the Le Moulin Pelé loop from Joué-sur-Erdre is a moderate 48.8 km route with over 300 meters of elevation gain, providing a more demanding experience for those with good fitness.

What natural features or landmarks can I see while road cycling around Grand Réservoir de Vioreau?

Road cycling routes often feature stunning views of Lake Vioreau itself and the surrounding Vioreau forest. You can also pass by significant landmarks such as the historic Vioreau Reservoir Dam, built in 1835, which is a key part of the Nantes-Brest Canal system. The West bridge at Lac de Vioreau is another notable point of interest.

What do other cyclists say about road cycling around Grand Réservoir de Vioreau?

The area is highly rated by the komoot community, with an average score of 4.0 stars. Cyclists often praise the tranquil and scenic environment, the well-maintained paved surfaces, and the diverse landscapes that blend expansive lake views with shaded forest paths. The minimal elevation changes are also frequently highlighted as a positive for enjoyable road cycling.

Are there family-friendly road cycling options around Grand Réservoir de Vioreau?

Yes, the Grand Réservoir de Vioreau is very family-friendly. Many of the easy, relatively flat loops around the lake are suitable for all ages and fitness levels. The area also offers amenities like picnic areas and supervised swimming during summer, making it a great destination for a family day out on bikes.

Can I bring my dog on road cycling routes around Grand Réservoir de Vioreau?

Grand Réservoir de Vioreau is a protected natural area known for its rich biodiversity. While specific rules for dogs on cycling routes are not detailed, it's generally advisable to keep dogs on a leash to protect wildlife and ensure a pleasant experience for all visitors. Always check local signage for any specific regulations regarding pets.

Where can I find parking for road cycling near Grand Réservoir de Vioreau?

Parking is generally available at popular access points around the Grand Réservoir de Vioreau, especially near main facilities and starting points for routes. Look for designated parking areas in towns like Joué-sur-Erdre or near the main recreational zones around the lake.

Are there places to eat or stay near the road cycling routes?

Yes, the site offers various amenities including snack bars and picnic areas, especially during peak seasons. For more extensive dining options or accommodation, you'll find cafes, pubs, and lodging in the nearby towns and villages surrounding the reservoir, such as Joué-sur-Erdre.

What is the best time of year for road cycling around Grand Réservoir de Vioreau?

The Grand Réservoir de Vioreau is enjoyable for road cycling throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery with changing foliage. Summer is also popular, especially with the availability of supervised swimming, though it can be warmer. The Vioreau forest provides welcome shade during hotter months.

Are there any circular road cycling routes around the lake?

Yes, circular routes are a highlight of road cycling around Grand Réservoir de Vioreau. A popular option is the West Bridge at Lake Vioreau – West bridge at Lac de Vioreau loop from Joué-sur-Erdre, which is an easy 23 km loop offering continuous views of the water and surrounding nature.

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