4.3
(13)
95
riders
7
rides
Gravel biking around Le Guerno features routes that explore the region's coastal and estuarial landscapes. The terrain includes paths along river estuaries, near old ports, and alongside beaches, offering a mix of surfaces suitable for gravel bikes. The area is characterized by bocage, wetlands, and rolling inland terrain, with some sections presenting moderate elevation changes. This blend of natural scenery and local maritime heritage provides diverse gravel cycling routes near Le Guerno.
Last updated: July 3, 2026
4.0
(2)
12
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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5.0
(2)
9
riders
47.9km
02:36
180m
180m
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.
3.0
(1)
13
riders
28.0km
01:59
340m
340m
Moderate gravel ride. 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.
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Not only can you admire the oyster beds, but you can also enjoy them fresh in several places.
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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.
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There are several gravel biking routes around Le Guerno, with a total of 8 tours available on komoot. These routes cater to various skill levels, including easy, moderate, and difficult options.
Yes, Le Guerno offers a couple of easy gravel bike trails suitable for beginners. One such route is the Old Port of La Roche-Bernard – Arzal Dam loop from La Roche-Bernard, which is 27.3 km long and features moderate elevation changes, making it a good starting point for those new to gravel biking in the area.
The elevation varies across the routes in Le Guerno. While some coastal paths offer minimal elevation gain, such as the Damgan's long beach – Kervoyal Beach loop from Muzillac with around 111 meters of ascent, other routes like the Old Port of La Roche-Bernard – Port de Folleux loop from La Roche-Bernard present a more challenging climb of over 760 meters.
For families, routes with less elevation and scenic views are ideal. The coastal sections, particularly those connecting beaches, tend to be flatter and more accessible. Consider routes that explore the estuaries and offer gentle terrain, keeping an eye on the total distance to match your family's endurance.
Many routes in Le Guerno pass by significant local landmarks. You can explore the historic Old Port of La Roche-Bernard, or cycle past the impressive Arzal Dam and its marina. Some trails also offer glimpses of historical sites like the Prières Abbey boundary marker.
Yes, many of the gravel bike routes in Le Guerno are designed as loops, allowing you to start and finish at the same point. Examples include the Arzal Dam – Old Port of La Roche-Bernard loop from La Roche-Bernard and the Old Port of La Roche-Bernard – Port Tréhiguier loop from La Roche-Bernard, providing convenient options for exploration.
The coastal and estuarial landscapes of Le Guerno are enjoyable throughout much of the year. Spring and autumn generally offer pleasant temperatures and fewer crowds, making them ideal for exploring. Summer can also be great, especially for coastal rides, but be prepared for more visitors. Winter riding is possible, but check local weather conditions for rain and wind.
Absolutely. For experienced gravel bikers looking for a more demanding ride, routes like the Old Port of La Roche-Bernard – Port de Folleux loop from La Roche-Bernard offer significant distances (over 64 km) and substantial elevation gains (over 760 meters), providing a challenging experience through varied terrain.
The gravel biking routes around Le Guerno are highly rated by the komoot community, with an average score of 4.7 stars from over 30 reviews. Riders frequently praise the diverse scenery, which includes picturesque river estuaries, charming old ports, and beautiful coastal sections, offering a rich mix of natural beauty and maritime heritage.
Many outdoor trails in the region are suitable for dogs, especially if they are well-behaved and kept on a leash. However, it's always recommended to check specific local regulations for each route or protected area you plan to visit, as rules can vary, particularly in nature reserves or near beaches during peak seasons.
Given the region's maritime heritage and charming towns, you'll often find opportunities for refreshments. Routes passing through or near places like La Roche-Bernard or coastal villages are likely to have cafes, bakeries, or small pubs where you can take a break and refuel. Planning your route with potential stops in mind is advisable.


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