4.7
(18)
204
riders
15
rides
Gravel biking around Guern offers access to a network of no traffic gravel bike trails within the Morbihan department of Brittany, France. The region is characterized by hilly terrain situated between the Sarre and Blavet valleys, featuring natural preserved paths and sections along the Canal de Nantes à Brest. These routes traverse diverse landscapes, including forests, grasslands, and traditional villages, providing varied terrain for gravel cyclists.
Last updated: May 22, 2026
4.0
(4)
34
riders
89.2km
04:41
540m
540m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.5
(6)
39
riders
65.9km
03:38
520m
520m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
23
riders
146km
07:42
1,070m
1,070m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
15
riders
79.3km
04:25
710m
710m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
14
riders
77.2km
04:08
610m
610m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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A great detour to Saint Aignan, the Les Pêcheries de Guerlédan restaurant is very welcoming, with bike parking, a generous meal and welcome. Crossing the village, you can reach the canal a little further on via the lock.
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A stretch on the dam before the Trehu Moron dam. The landscape is constantly changing. The canal meanders through the countryside here. I love this landscape, and it's a good mood to drive here.
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Very nice lock along the canal
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View of the old Cistercian abbey from the 12th century.
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A very beautiful and very touristy place near the old monastery.
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There are over 10 dedicated no-traffic gravel bike trails around Guern, offering a variety of distances and difficulty levels. These routes are specifically curated to keep you away from vehicular traffic, allowing for a peaceful and immersive cycling experience.
The terrain around Guern is quite varied, ranging from natural preserved paths in the Sarre and Blavet valleys to sections along the Canal de Nantes à Brest which feature a pleasant gravelly surface. You'll encounter hilly sections, particularly on routes like the Bon-Repos Abbey – Lock No. 138 of Bon Repos loop from Lignol, providing a good mix of challenges and scenic views.
While specific 'family-friendly' designations aren't always explicit, many sections of the Canal de Nantes à Brest are known for their gentle gradients and car-free environment, making them suitable for families. Look for routes with lower elevation gain and shorter distances for a more relaxed family outing.
You can discover several historical and natural attractions. The Pontivy Castle is a notable landmark, and the Canal de Nantes à Brest itself, with its system of locks like the Guernal lock, offers picturesque views. The region is also rich in chapels, such as the Saint-Nicodème Chapel, providing cultural stops along your ride.
Brittany generally offers pleasant cycling conditions from spring through autumn. Spring brings blooming landscapes, while summer provides warmer weather. Autumn offers beautiful foliage. Winter can be damp, but many trails remain accessible, though conditions might be muddier. Always check local weather forecasts before heading out.
Yes, many of the gravel routes around Guern are designed as loops, allowing you to start and finish at the same point. For example, the Cascade Lock – Greenway in Mûr-de-Bretagne loop from Cléguérec is a challenging circular route, and the Pontivy Castle – Cascade Lock loop from Pontivy offers a moderate option.
The area is highly rated by the komoot community, with an average score of 4.3 stars. Reviewers often praise the tranquility of the car-free paths, the diverse landscapes of valleys and waterways, and the opportunity to explore historical sites like the Notre-Dame-de-Quelven Basilica away from busy roads.
Yes, while some routes are more challenging, there are moderate options suitable for beginners looking for car-free experiences. The Cascade Lock – Canal de Nantes à Brest loop from Le Sourn is a moderate route that follows the canal, offering a relatively flat and traffic-free ride perfect for those starting out.
Parking is generally available in the towns and villages that serve as starting points for these trails, such as Cléguérec, Lignol, or Pontivy. Specific parking information can often be found on individual route pages or local tourism websites. For example, the 'Circuit de Kalong Guern' is accessible from Guern itself, where you can typically find local parking.
Access to trailheads via public transport can be limited in rural areas like Guern. However, larger towns like Pontivy, which serve as starting points for some routes, may have better public transport connections. It's advisable to check regional bus or train schedules in advance if you plan to rely on public transport.
For experienced riders seeking longer, car-free challenges, routes like the Bon-Repos Abbey – Lock No. 138 of Bon Repos loop from Lignol offer significant distances (over 150 km) and considerable elevation gain, providing an epic gravel biking adventure through varied terrain.
The surfaces vary from compacted gravel paths along the Canal de Nantes à Brest to more natural, sometimes rougher, preserved paths in the valleys. You can expect a mix of hard-packed dirt, loose gravel, and potentially some grassy or muddy sections, especially after rain. Gravel bikes with wider tires are ideal for these conditions.


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