4.3
(66)
319
riders
33
rides
Gravel biking around Vallée du Costour offers diverse no traffic gravel bike trails through a natural area characterized by a modest river, extensive woods, meadows, and wetlands. The terrain includes coastal sections and river valleys, with generally moderate elevation changes and gentle hills. This region provides a blend of natural beauty and historical sites, making it suitable for various outdoor activities. Panoramic views of the Bay of Brest are accessible from several points within the valley.
Last updated: June 29, 2026
4.3
(7)
58
riders
53.6km
03:56
760m
760m
Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.
4.0
(2)
35
riders
60.7km
03:31
330m
330m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Sign up for free
4.4
(14)
34
riders
54.0km
03:10
300m
300m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
23
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.3
(4)
12
riders
29.2km
01:49
180m
180m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
Popular around Vallée du Costour
A magnificent landscape on both sides!!!
0
0
Simply a brilliant view of the Plage du Vougot
3
0
Bridge over the river with a nice restaurant and the opportunity to buy oysters
2
0
There is no road on this viaduct, just a railway! Komoot won't suggest it to you anyway. The road passing at the foot is a fairly large country road but pleasant. When it is not cluttered with brambles, it is possible to take a pedestrian and cycle path bordering the road on the pond side when leaving Le Relecq Kerhuon, up to the first crossroads (direction Le Douvez, Landerneau).
0
0
In front of the church on the left there is a wonderful boulangerie / patisserie called "Le Pêche Mignon"
1
0
Probably the most beautiful roads you can ride in this area. 100% worth visiting! Roads can get a little tight around some blind corners so be careful
0
0
There are 18 traffic-free gravel bike trails around Vallée du Costour. These routes offer a mix of difficulties, with 1 easy, 12 moderate, and 5 difficult options, ensuring there's something for every skill level.
Vallée du Costour is enjoyable for gravel biking throughout the year, but spring and autumn offer the most pleasant conditions with mild weather and vibrant natural scenery. While winter riding is possible, some sections might become muddy due to the valley's wetlands and river, so be prepared for potentially challenging terrain.
Yes, there is at least one easy, traffic-free gravel route perfect for beginners or families. For a gentle introduction to the area, consider the Anse du Moulin Blanc – Moulin Blanc Beach loop from Stade Francis-Le Blé. This route is classified as easy and offers a pleasant ride without significant elevation changes.
The trails in Vallée du Costour wind through a diverse landscape featuring woods, meadows, and fields, alongside a charming river and numerous wetlands. You'll encounter a rich variety of trees, including sequoias, eucalyptus, and giant bamboos, and might even spot local wildlife like roe deer or badgers. Many routes also offer scenic views of the Bay of Brest.
Yes, Vallée du Costour has historical significance. The area was once home to the Poudrerie du Moulin Blanc, a gunpowder factory established in 1876. You can still observe remnants of this past, such as old buildings and two washhouses from the early 20th century, adding a cultural dimension to your ride.
While the region research doesn't explicitly state rules for dogs on trails, natural areas in France generally welcome dogs on a leash. Given the rich biodiversity, it's always best to keep your dog under control to protect wildlife and ensure a pleasant experience for all users. Please check local signage for specific regulations.
Yes, many of the gravel bike routes in Vallée du Costour are designed as loops, allowing you to start and finish at the same point. An example is the Gravel Path Along the Elorn – Anse de Poul Ar Vilin loop from Le Relecq-Kerhuon, which offers a moderate challenge and brings you back to your starting location.
The area is highly rated by the komoot community, with an average score of 4.4 stars. Reviewers often praise the peaceful, traffic-free nature of the trails, the diverse natural beauty, and the opportunity to explore both wooded sections and scenic coastal views without encountering vehicle traffic.
Yes, Vallée du Costour is easily accessible from various entry points, including Allée du Candy, Rue du Rody, and Rue du Costour. These locations typically offer parking options, making it convenient to start your gravel biking adventure. Specific parking details can often be found on individual route pages.
While the Vallée du Costour itself is a natural area, its proximity to Brest and surrounding communes like Guipavas and Le Relecq-Kerhuon means you'll find cafes, restaurants, and other amenities nearby. It's advisable to check the specific starting or ending points of your chosen route for the closest options.
The trails vary in difficulty. While there is an easy route, the majority are classified as moderate (12 routes) or difficult (5 routes). Moderate routes typically involve some elevation changes and varied terrain, while difficult routes might include longer distances, more significant climbs, or potentially muddy sections, especially after rain. Always check the route details before you go.


Browse the best Gravel rides in other regions.