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France
Finistère
Brest

Vallée du Costour

The best traffic-free bike rides around Vallée du Costour

4.3

(80)

374

riders

39

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.

Best no traffic gravel…

Last updated: August 23, 2026

4.3

(7)

62

riders

#1.

Albert Louppe Bridge – Iroise Bridge loop from Kerhuon

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.

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Hard

Hard gravel ride. Very good fitness required. You may need to push your bike for some segments of this route.

Hard
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Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Moderate

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

Hard
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Popular around Vallée du Costour

Traffic-free bike rides around Vallée du Costour

Traffic-free bike rides around Vallée du Costour

Tips from the Community

b jp
July 16, 2026, Singletrack à Breignou

easy and safe circuit. Can be done with family

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Papy
November 22, 2025, Pont Albert Louppe

A magnificent landscape on both sides!!!

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very nice course.

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Simply a brilliant view of the Plage du Vougot

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3

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Bridge over the river with a nice restaurant and the opportunity to buy oysters

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Phare de Saint-Mathieu is the name of a lighthouse in the village of Saint-Mathieu on the Saint-Mathieu Point in Plougonvelin in the Finistère department. It was built on the site of the former Saint-Mathieu Abbey. Its theoretical range is 29 nautical miles, which is approximately 55 kilometers. Together with the Kermorvan lighthouse, it indicates the Passage du Four (Chenal du Four), an important north-south passage from or to the Iroise Sea, which runs between the mainland and the island of Ouessant, thus saving about two days of travel time. In conjunction with the Portzic lighthouse, it illuminates the entrance to the Bay of Brest. The lighthouse has been listed as a French Historic Monument since May 23, 2011. It is open to the public. Just west of the lighthouse is the Sémaphore de la Pointe Saint-Mathieu.

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Glen Sobel
September 10, 2025, Passerelle du Croaë

A sign says: everyone travels at the same speed here. So cycling is allowed, but at walking pace.

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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).

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Frequently Asked Questions

How many traffic-free gravel bike trails are available in Vallée du Costour?

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.

What is the best time of year to go gravel biking in Vallée du Costour?

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.

Are there any easy, traffic-free gravel routes suitable for beginners or families?

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.

What kind of landscapes and natural features can I expect to see on these trails?

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.

Are there any historical sites or points of interest along the gravel bike routes?

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.

Can I bring my dog on the gravel bike trails in Vallée du Costour?

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.

Are there any circular gravel bike routes available?

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.

What do other gravel bikers enjoy most about Vallée du Costour?

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.

Is parking available near the starting points of these gravel trails?

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.

Are there any cafes or places to get refreshments near the trails?

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.

How challenging are the gravel bike trails in Vallée du Costour?

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.

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