4.2
(36)
218
riders
26
rides
No traffic gravel bike trails around Lac D'Arzal are characterized by a diverse landscape, primarily defined by the Vilaine Estuary and its surrounding features. The region offers a blend of coastal scenery, tranquil riverine environments, and traditional Breton countryside. Notable features include the Arzal Dam, a significant structure on the Vilaine estuary, and varied terrain along the "La Littorale" cycle route. Gravel biking here involves a mix of quiet paved roads and unpaved sections, including dirt tracks.
Last updated: May 10, 2026
4.0
(2)
11
riders
28.2km
02:02
340m
340m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
26
riders
46.2km
02:38
390m
390m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
15.7km
01:07
160m
160m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5
riders
21.1km
01:32
220m
220m
Hard gravel ride. Good fitness required. You may need to push your bike for some segments of this route.
7
riders
99.9km
06:28
990m
990m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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In 832, Conuvoion, a Breton monk, founded the Abbey of Saint-Sauveur in Redon with the support of the Carolingian Emperor Louis the Pious. A small rural community slowly grew up around the abbey. During the Middle Ages, the town benefited from its location on the Vilaine River, as trade goods could be transported upstream to Redon on ocean-going vessels. There, the goods were transshipped and transported further on inland waterway barges towards Rennes, the capital of Brittany. In the 19th century, Redon experienced another period of prosperity with the construction of the Nantes-Brest Canal. Even today, the old shipowners' houses and the large harbor basin bear witness to its history as a trading port.
1
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Redon has managed to retain its quiet, small-town character, despite its intense activity (and traffic). Following the floods of 2024, the campsite is closed. The pedestrian street is pleasant and not overcrowded with shops. Just what you need. A visit to the port is also a pleasant experience.
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The Story of François and Thérèse Mitaillé On August 7, 1944, in the final chaotic weeks of the German occupation, François Mitaillé and his younger sister Thérèse left their home in Penhap, a small hamlet near Marzan. They wanted to return to the farm to tend to the animals. On their way, they were stopped by German soldiers, taken away, and never seen alive again. Days passed, then weeks. The village lived between hope and fear. Finally, it was their own father who, after an endless search, found their bodies—tortured and shot. The loss was immeasurable, not only for their family, but for the entire community. The memorial commemorates François and Thérèse, brother and sister, who were torn away by the violence of war in the prime of their lives. It stands here as a silent witness and a warning that freedom can never be taken for granted.
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through the countryside, always nice to find the canal again
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The dam itself is interesting, but the route is not ideal for cyclists.
0
0
Pleasant section of the Rance and Vilaine cycle route, between Vieille Roche and Keraudrain.
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There are over 20 traffic-free gravel bike routes around Lac D'Arzal, offering a variety of experiences from easy to difficult. The region is well-regarded by the komoot community, with an average rating of 4.3 stars.
The terrain around Lac D'Arzal is diverse, featuring a mix of quiet paved roads, dirt tracks, and unpaved sections. You'll encounter undulating landscapes along the Vilaine Estuary, coastal paths towards Pénestin, and tranquil routes through traditional Breton countryside. This variety makes it ideal for gravel biking.
Yes, many routes are suitable for families, especially those that stick to dedicated cycle paths or quieter country lanes. Look for routes marked as 'easy' or 'moderate' difficulty. While specific family-friendly routes aren't highlighted by name, the general nature of the 'no traffic' trails makes them safer for all ages.
You'll find several interesting sights. The impressive Arzal Dam, Europe's largest estuary dam, is a prominent feature. Many routes also pass through the charming Old Port of La Roche-Bernard, a 'Small Town of Character' with historic houses. You might also cross the Morbihan Bridge or the Old Bridge.
Absolutely. While many routes are moderate, there are 8 difficult routes for those seeking a greater challenge. For example, the Old Port of La Roche-Bernard – Port de Folleux loop from La Roche-Bernard is a longer, more demanding ride with significant elevation gain, offering a rewarding experience for seasoned gravel bikers.
The region is enjoyable for gravel biking for much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery, with fewer crowds. Summer can be warm but is also popular, especially along coastal sections. Winter can be cooler and wetter, but many trails remain accessible.
Yes, many of the no-traffic gravel bike routes around Lac D'Arzal are designed as loops, allowing you to start and end at the same point without retracing your steps. An example is the Arzal Dam – Old Port of La Roche-Bernard loop from La Roche-Bernard, which offers a scenic circular journey.
Yes, you'll find amenities in the towns and villages along the routes. The area around the Arzal Dam and Marina often has cafes and restaurants. The historic Old Port of La Roche-Bernard is particularly well-equipped with pubs, cafes, and restaurants where you can refuel and relax.
While specific public transport links directly to trailheads can vary, major towns in the region, such as Redon, are accessible by train. From there, you might need to cycle or arrange local transport to reach specific starting points for the gravel trails. For detailed information on regional public transport, it's best to consult local transport authority websites.
Parking is generally available in the towns and villages that serve as common starting points for routes. For instance, you can often find parking near the Old Port of La Roche-Bernard or close to the Arzal Dam. Always check local signage for parking regulations and availability.
Generally, dogs are welcome on trails in France, provided they are kept on a leash and you clean up after them. However, specific restrictions might apply in certain protected natural areas or on private land. It's always advisable to check local regulations for the specific section of the trail you plan to ride with your dog.
The routes vary significantly in length to suit different preferences. You can find shorter rides, such as the Old Port of La Roche-Bernard – Villaine Valley loop from La Roche-Bernard at around 15 km, up to much longer excursions like the Old Port of La Roche-Bernard – Arzal Dam loop from La Roche-Bernard, which is over 46 km. This allows you to choose a route that matches your desired distance and time commitment.


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