4.4
(379)
1,469
riders
178
rides
Mountain bike trails around Vallée du Costour offer a diverse outdoor experience within a 129-hectare green oasis located between Guipavas and Le Relecq-Kerhuon in Brest, France. The region features a mix of lush forests, open spaces, and serene water bodies, with a modest river meandering through dense woodlands of deciduous trees. This varied landscape includes both easily accessible paths and more challenging sections with steep inclines and natural obstacles, providing a range of terrain for mountain bikers.
Last updated: June 26, 2026
4.4
(17)
77
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
3.5
(4)
32
riders
31.3km
02:22
410m
410m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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5.0
(2)
7
riders
11.5km
00:56
170m
170m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
2
riders
27.7km
01:41
200m
200m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
3.0
(1)
2
riders
22.7km
01:42
300m
300m
Hard mountain bike ride. Great for any fitness level. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
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A beautiful walk with a magnificent view.
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A magnificent landscape on both sides!!!
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In the hollow of the valley, a small stream meanders, feeding many ponds and a waterfall. Perfect for recharging your batteries. This arboretum is sumptuous. You will find incredible tree species, sequoias, eucalyptus, magnolias, giant bamboos and an alley planted with absolutely remarkable tree ferns. On the water, a beautiful diversity of birds, cormorants, herons, egrets, ducks, and kingfishers among others. Good walk a stone's throw from the beach and the marina of the marina.
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In the heart of the Vallon du Stang-Alar, the Botanical Conservatory garden is nestled in a former quarry. The 30-hectare site was chosen for its mild climate, steep slopes and the presence of water, which make it an exceptional place where plants from all over the world can be grown. The site is crossed by wide and narrow, stabilized paths, as well as forest trails. Opening hours Conservative garden: open every day from 9:00 a.m. to 6:00 p.m., until 8:00 p.m. in summer.
1
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Mountain bike or gravel path, very non-technical and rather rolling.
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Shared pedestrian/bike path along the bank of the Penfeld
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Great mountain bike path, but watch out for the logs on the path!
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Nice view of the bay and easy to drive as no cars can cross this small cycle and pedestrian bridge.
3
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Vallée du Costour offers a wide selection of mountain bike trails, with over 170 routes available for exploration. These trails cater to various skill levels, from easy rides to more challenging adventures.
The trails in Vallée du Costour present a diverse range of difficulties. You'll find approximately 68 easy routes, 95 moderate routes, and 8 more difficult trails. This variety ensures options for both casual riders and those seeking a more demanding experience.
Yes, Vallée du Costour has numerous easy trails suitable for beginners or those looking for a relaxed ride. An example is the Moulin Blanc Beach – Anse du Moulin Blanc loop from Stade Francis-Le Blé, an easy 10.8 km path offering a scenic ride. Another accessible option is the Traon-Bihan Stream – Saint-Martin district loop from Coataudon, which is 27.6 km and also rated easy.
The terrain in Vallée du Costour is quite varied, featuring lush forests, open spaces, and serene water bodies. You'll ride through dense woodlands of deciduous trees, and some paths can be challenging with steep inclines and natural obstacles like tree roots, especially after rain. A modest river also meanders through the valley, adding to the diverse landscape.
Vallée du Costour is rich in natural beauty and history. You can explore remnants of the former Poudrerie du Moulin Blanc, a gunpowder factory, including two early 20th-century washhouses. The valley also boasts an arboretum with unique tree species like sequoias and giant bamboos. Certain points offer magnificent panoramic views overlooking the Brest harbor and the Anse du Moulin Blanc.
Vallée du Costour is enjoyable year-round, but the best time often depends on your preference. Spring and autumn offer pleasant temperatures and vibrant foliage. During wet seasons, some paths can become more challenging due to mud and slippery conditions from tree roots, which might appeal to more experienced riders. Summers are generally good for drier trails.
Yes, many of the mountain bike trails in Vallée du Costour are designed as loops, allowing you to start and finish at the same point. Examples include the Mountain Bike Trail – Anse de Poul Ar Vilin loop from Stade Francis-Le Blé, a moderate 42.5 km route, and the Albert Louppe Bridge – Iroise Bridge loop from Le Relecq-Kerhuon, a longer 49.7 km moderate trail.
While specific parking areas for each trail vary, the Vallée du Costour is generally accessible. Many routes, such as those starting from Stade Francis-Le Blé or Coataudon, likely have nearby parking options. It's advisable to check the starting point of your chosen route on Komoot for detailed parking information.
Vallée du Costour is nestled between Guipavas and Le Relecq-Kerhuon, which are part of the Brest urban area. Public transport options, such as local buses, may provide access to points near the valley. For specific routes and stops, it's best to consult local public transport schedules and maps in Brest Métropole.
As Vallée du Costour is located within the Brest metropolitan area, you'll find various cafes, restaurants, and accommodation options in the nearby towns of Guipavas, Le Relecq-Kerhuon, and Brest itself. These towns offer amenities for pre- or post-ride refreshments and overnight stays.
The mountain bike trails in Vallée du Costour are highly rated by the Komoot community, with an average score of 4.5 stars from over 400 reviews. Riders often praise the diverse terrain, the picturesque and varied landscapes encompassing forests and water features, and the rewarding panoramic views, especially overlooking the Brest harbor.
Yes, the valley offers a good selection of easy trails that are suitable for families. These paths provide a refreshing escape into nature without being overly strenuous. The diverse and accessible trails, combined with the picturesque scenery, make it an enjoyable destination for family outings. Always check the specific trail details for distance and elevation to ensure it matches your family's capabilities.


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