4.2
(350)
8,439
riders
506
rides
Road cycling around Vallée du Costour offers diverse landscapes, from coastal vistas to verdant countryside, despite the valley itself being primarily unpaved. The region features routes winding along the Breton coast, providing views of the Rade de Brest and the Elorn river. Cyclists can also explore a network of greenways and quiet country roads through fields and small towns. The area provides well-paved surfaces suitable for road bikes, allowing rides through nature away from heavy traffic.
Last updated: May 13, 2026
12
riders
13.5km
00:38
150m
150m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
4.0
(1)
9
riders
23.1km
01:08
330m
330m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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4.0
(2)
72
riders
33.0km
01:35
420m
420m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
9
riders
10.1km
00:27
90m
100m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
3.0
(2)
7
riders
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
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Very practical... Thank you for this equipment.
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A magnificent landscape on both sides!!!
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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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Best view of the harbor and the cable car.
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Mission Saint Luc is a youth center for young people! The site is entrusted by the Diocese of Quimper and Léon to welcome young people from Brest and the surrounding area to deepen their faith and experience moments of friendship.
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Building constructed according to the plans of the architect Bourdais by the contractor Kerautret in 1862. Spire from 1958 according to the plans of the architect Chevalier. Latin cross plan with three naves. Semicircular chevet flanked by a rectangular sacristy to the east. Bell tower with a bell chamber supported by an openwork spire. Structural work in rendered granite rubble, with the exception of the window frames and corner quoins, in granite ashlar, all painted white. Five-bay nave with a ribbed vault and lit by tall windows. Pointed arches resting on column capitals. Western massif supporting a gallery. Transepts ending in apses. Choir with an ambulatory flanked by two radiating chapels.
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The old church of Saint-Marc still stands and bears witness to a long history. It is indeed attested that religious occupation of the site dates back to the 15th century and that the building was constructed in the 17th century. Small, narrow, and dilapidated, it was supplanted by the new church built higher up, but was still frequented, particularly by fishermen who plied their trade in the cove which, before land reclamation, was right next door. A vestige that almost disappeared: The building took the name Notre-Dame du Bon-Port chapel in the 1870s. Restored several times, it also almost disappeared many times, notably due to the explosion of the Ocean Liberty ship in 1947. Saint-Marc suffered greatly from the bombings, to the point that the chapel is today one of the few visible remains of the village of yesteryear. Despite this, it is not listed, and its future remains uncertain: its roof needs to be redone, and it is only open for two masses per year, on Ascension Thursday and August 15th, plus a few special concerts. Having been built before the separation of Church and State, it is owned by the City of Brest. Finally, it should be noted that its stained-glass windows were created by a woman, Adeline Bony, wife of Jacques Bony, who created the stained-glass windows of the Saint-Louis church.
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A great panoramic means of transport that connects the wonderful, freely accessible, historic halls of Les Ateliers des Capucines, where you can see Napoleon's golden parade boat, with the post-war city center.
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There are over 500 road cycling routes around Vallée du Costour documented on komoot, offering a wide variety of options for different skill levels and preferences. This includes 87 easy routes, 375 moderate routes, and 68 difficult routes.
Road cycling routes in the vicinity of Vallée du Costour offer diverse landscapes. You'll find scenic coastal routes with breathtaking views of the Rade de Brest and the Elorn river, as well as quiet country roads and greenways winding through fields and small towns. While the Vallée itself is primarily unpaved, the surrounding areas provide well-maintained paved surfaces suitable for road bikes.
Yes, the region offers several easy road cycling routes suitable for families. For instance, the Landerneau Viaduct – Anse du Moulin Blanc loop from Le Relecq-Kerhuon is an easy 13.3 km path featuring views of the Landerneau Viaduct and the Anse du Moulin Blanc, perfect for a relaxed family ride.
Cyclists can enjoy several significant landmarks and panoramic viewpoints. The historic Albert Louppe Bridge, reserved for cyclists and pedestrians, offers stunning views of the Brest harbor. Many coastal routes, such as those around the Moulin Blanc beach, also provide magnificent panoramic vistas. You can also explore routes featuring the Iroise Bridge or the Landerneau Viaduct.
Yes, many road cycling routes around Vallée du Costour are designed as loops, allowing you to start and end at the same point. Examples include the Brest–Tinduff Bicycle Lane – Iroise Bridge loop and the Landerneau Viaduct loop, both starting from Le Relecq-Kerhuon.
The road cycling routes around Vallée du Costour are highly rated by the komoot community, with an average score of 4.2 stars from over 400 reviews. More than 11,000 road cyclists have used komoot to explore the varied terrain, often praising the scenic coastal views and the network of quiet country roads.
The region around Brest is well-served by public transport, making it possible to reach starting points for many routes. Brest Métropole offers resources for cycling, including information on how to explore the area by bike. For more details on cycling in Brest Métropole, you can visit Brest Métropole Tourisme.
Yes, for experienced road cyclists seeking a challenge, there are 68 difficult routes available. These routes often feature more significant elevation changes and longer distances, providing a rewarding experience for advanced riders.
The region's coastal climate generally offers pleasant conditions for road cycling from spring through autumn. While specific seasonal considerations can vary, these periods typically provide milder temperatures and less precipitation, making for more enjoyable rides along the coast and through the countryside.
While the Vallée du Costour is primarily known for its unpaved trails suitable for hiking and mountain biking, its natural beauty contributes to the overall appeal of the surrounding road cycling area. For more information about the Vallée du Costour as a natural site, you can visit Brest Métropole Tourisme.
Absolutely. Many routes in the area are designed to showcase the diverse landscapes. For example, the Moulin Blanc Beach – Recouvrance Bridge loop from Le Relecq-Kerhuon combines coastal views with sections that lead through more inland areas, offering a varied and engaging ride.
Yes, among the 530 routes, including the 68 difficult ones, you will find options with notable elevation gains suitable for training. These routes leverage the varied topography of the Finistère department, providing opportunities for challenging climbs and descents.


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