4.3
(106)
1,223
riders
56
rides
Mountain biking around Saint-Guyomard offers diverse landscapes within the Morbihan department of Brittany, France. The region features a mix of forests, river valleys, and countryside, providing varied terrain for exploration. A significant portion of the area is covered by the Landes de Lanvaux, offering expansive and rugged landscapes. These natural features contribute to a network of mountain bike trails suitable for different skill levels.
Last updated: June 20, 2026
4.4
(9)
86
riders
49.9km
03:47
470m
470m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(1)
39
riders
35.6km
02:43
280m
280m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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3.0
(1)
16
riders
23.2km
01:42
200m
200m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
19
riders
24.2km
01:48
320m
320m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
4.5
(2)
8
riders
16.7km
01:09
150m
150m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
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At this intersection, you can see three menhirs. A fourth is located about 400m further on the path opposite in the forest.
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This wooded section is certainly the most pleasant in the Molac Forest. The other paths are indeed quite monotonous due to its endless straight lines.
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very beautiful entrance to the castle of Kervilly
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This imposing gateway has marked the entrance to Kerfily Castle since the 17th century. Adorned with a portal and a postern gate, the coats of arms of the castle's past owners' families can be seen on the battlements. The castle is private and serves as a venue for events such as weddings.
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The castle of Trédion which is more a manor than a real castle belonged to the Duchy of Brittany. The Dukes of Brittany came to hunt there because a large forest area surrounds it. Its park designed with its irregular path, its artificial river, its waterfall, its basin, its pond as well as the vegetable garden and the orchard are registered in the pre-inventory of remarkable gardens. Nowadays this private domain can be reserved for weddings or other events like Breton dances.
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Access is unauthorized from October to February inclusive due to hunting, this section nevertheless remains my favorite in the Molac forest.
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The terrain around Saint-Guyomard is diverse, featuring a mix of forests, river valleys, and countryside. A significant portion of the area is covered by the Landes de Lanvaux, offering expansive and rugged landscapes. You'll find varied gradients and natural features suitable for mountain biking.
There are over 50 mountain bike trails available around Saint-Guyomard, catering to various skill levels. This includes 26 easy routes, 28 moderate routes, and 3 more challenging options.
Yes, many routes around Saint-Guyomard are designed as loops. For example, the Callac Cave – Coëby Menhirs loop from Le Moulin de Callac is a moderate 26.1-mile circular trail, and the Grotte aux Loups – Coëby Menhirs loop from Saint-Guyomard is another popular 21.9-mile loop.
You can encounter various points of interest. The region is known for its ancient megalithic structures, such as dolmens and menhirs, which are often found along trails. The Callac Cave – Coëby Menhirs loop from Le Moulin de Callac specifically explores areas with these structures. Additionally, the Historic centre of Malestroit and the 15th-century Château de Brignac are nearby attractions that add cultural interest to the area.
The mountain bike trails in Saint-Guyomard are highly rated by the komoot community, with an average score of 4.3 stars from over 100 reviews. Reviewers often praise the varied terrain, the mix of forests and river valleys, and the expansive landscapes of the Landes de Lanvaux.
Yes, Saint-Guyomard offers 26 easy-rated mountain bike routes, providing options for beginners or those looking for a more relaxed ride. These trails typically feature less challenging gradients and smoother paths.
The Morbihan department, where Saint-Guyomard is located, is generally suitable for mountain biking across various seasons. Spring and autumn often offer pleasant temperatures and vibrant scenery. While winter riding is possible, checking local weather conditions is always advisable.
While specific parking details for every trailhead are not provided, Saint-Guyomard is a commune in a rural region. Parking is generally available in and around villages or designated starting points for outdoor activities. It is recommended to check the individual route details on komoot for specific parking information for your chosen trail.
The Étang du Helfaut is a notable natural feature in the vicinity. While specific routes passing directly by it are not detailed in the guide, the region's network of trails often incorporates natural beauty spots. You may find routes that offer views or access to this pond, adding to the scenic appeal of your ride.
There is no indication that special permits are required for mountain biking on the general network of trails in Saint-Guyomard or the Morbihan department. However, it's always good practice to respect private property and any local signage regarding trail access.
Yes, the region around Saint-Guyomard is rich in history. The Saint-Pierre Church – Green Valley loop from Sérent, for instance, winds past historical landmarks. Many trails also pass by ancient megalithic structures, offering a blend of natural beauty and cultural exploration.
One of the longer routes available is the Historic centre of Malestroit – Château de Josselin loop from Sérent, which covers a distance of 47.5 miles (76.4 km) and is rated as moderate.


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