4.3
(79)
2,559
riders
53
rides
No traffic road cycling routes around Lac D'Arzal offer a diverse landscape for cyclists. The region is characterized by the expansive Vilaine Estuary, coastal paths with sea views, and the significant Arzal Dam. Routes often traverse the Vilaine Valley, featuring varied terrain from gentle sections to noticeable inclines, and pass through traditional Breton villages.
Last updated: October 10, 2026
3.0
(1)
13
riders
Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.
5.0
(1)
54
riders
63.2km
03:11
780m
780m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

15
riders
48.0km
02:12
380m
380m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
11
riders
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
14
riders
45.1km
02:04
500m
500m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Although the nave retains some older parts, the current church is a recent construction (1905). Bakery opposite the church and toilets with water on its left side.
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A dam behind which thousands of pleasure boats shelter from tides, storms, and salt.
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The port is very beautiful but even if you have to climb, the old town is also worth a visit
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Starting from Missillac in Loire-Atlantique towards Morbihan via St Dolay and Rieux. Just to set a little sporting challenge, the famous Côte d'Aucfer, 900 meters of climbing at an average of 8.5%, with the first 100m at over 12.5% to get you into the rhythm. Then heading to the 3rd department, Ille-et-Vilaine via Redon to return towards Loire-Atlantique along the Nantes-Brest Canal where you can see World War II boats along the bank.
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It's a truly wonderful experience when the lock is opened for the sailing ships. This exciting spectacle, as the road is closed, the drawbridge is raised, and the sailors enter and exit the lock, is not to be missed.
1
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The dam itself is interesting, but the route is not ideal for cyclists.
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Milestone marking the boundary of the Abbey of Prières. Created between 1248 and 1252, it was located in Billiers, near the Pointe de Penlann. The abbey was largely destroyed during the Revolution. There are still a few buildings, the bell tower and a few milestones at the boundary of its domain. This milestone is the easiest to find: it is decorated with a Macle (heraldic symbol) and an Ermine (symbol of the Dukes of Brittany who founded the abbey).
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There are over 45 dedicated no-traffic road cycling routes around Lac D'Arzal. These routes offer a variety of distances and difficulty levels, ensuring an enjoyable experience for different cycling preferences.
Yes, Lac D'Arzal offers several easy no-traffic road cycling routes perfect for beginners. One excellent option is the Arzal Dam – Saint Symphorien Chapel loop from Arzal, which is 31.3 km long and features gentle elevation changes, making it ideal for a relaxed ride.
The no-traffic routes around Lac D'Arzal offer diverse scenery. You can cycle along the Vilaine Estuary, cross the impressive Arzal Dam, and enjoy coastal paths with sea views. Many routes also pass through traditional Breton villages. The Morbihan Bridge also offers great views of La Roche-Bernard.
Absolutely! The Arzal Dam is a significant landmark and a popular feature on many cycling routes. It's Europe's largest estuary dam, and cycling across its 500-meter span offers memorable views. The Arzal Dam – Saint Symphorien Chapel loop from Arzal is one route that includes this experience.
Yes, many of the no-traffic road cycling routes in the region are circular, allowing you to start and end at the same point. For example, the Port Tréhiguier – Plage de Loscolo loop from Arzal is a popular circular route that takes you along scenic coastal paths.
Many of the routes, especially the easier and flatter sections along the coast or the Vilaine Estuary, are suitable for families. The dedicated no-traffic nature of these paths ensures a safer and more relaxed experience for all ages. Look for routes marked as 'easy' for the most family-friendly options.
Parking is generally available in and around the main towns and villages, as well as at various ports and marinas in the region. For instance, the marina at Arzal, being the third-largest in Morbihan, often provides convenient parking options close to route starting points.
Yes, the routes often pass through charming traditional Breton villages and along picturesque ports, offering opportunities for breaks. You'll find cafes and local eateries in places like the Old Port of La Roche-Bernard or near the smaller ports like Tréhiguier. Some coastal routes, such as the "Billiers – Coffee stop: Le Bateau Livre loop from Camoël" (mentioned in region research), even highlight specific coffee stops.
For experienced cyclists seeking a challenge, the region offers routes with more significant elevation changes, particularly within the Vilaine Valley. The Old Port of La Roche-Bernard – Le Guerno loop from La Roche-Bernard, for example, covers nearly 59 km with over 600 meters of elevation gain, providing a rewarding ride.
The area is highly rated by the komoot community, with an average score of 4.1 stars. Reviewers often praise the diverse landscapes, from the scenic Vilaine Estuary to the picturesque coastal paths, and the opportunity to explore charming traditional villages and historical sites like the Old Port of La Roche-Bernard, all on quiet, no-traffic roads.
Yes, several routes allow you to discover the rich history of the region. The Old Port of La Roche-Bernard – Saint-Cry Calvary loop from La Roche-Bernard is a great option, taking you through this 'Small Town of Character' with its old houses and maritime heritage.
The spring and autumn months generally offer the most pleasant conditions for road cycling in Lac D'Arzal, with milder temperatures and fewer crowds. Summer can also be enjoyable, especially along the coast, but be prepared for potentially warmer weather. Winter rides are possible, but check local conditions for wind and rain.


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