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France
Finistère
Brest

Vallée du Costour

The best walks and hikes around Vallée du Costour

4.3

(781)

6,299

hikers

345

hikes

Hiking around Vallée du Costour offers diverse landscapes, including lush forests, open meadows, and river valleys. The region is characterized by mixed forest stands of chestnut, oak, beech, and maple, with a modest river winding through. Geological features include a gneiss layer, a 30-meter cliff overlooking a flooded quarry, and a retention pond. These varied terrains provide a rich setting for outdoor activities, ranging from easy strolls to more moderate routes.

Best hiking trails around Vallée du Costour

  • The most…

Last updated: August 20, 2026

4.6

(8)

185

hikers

#1.

Moulin Blanc Beach – Viewing platform loop from Pont de l'Iroise

5.80km

01:29

20m

20m

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

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Easy

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate
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Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

Moderate

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy

Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.

Easy
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Tips from the Community

Papy
November 22, 2025, Pont Albert Louppe

A magnificent landscape on both sides!!!

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Michele
March 12, 2025, Ruinen im Wald

a very beautiful hike

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feet in the water while being in the city.

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Nice view of the bay and easy to drive as no cars can cross this small cycle and pedestrian bridge.

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Moulin Blanc beach is the only fine sand beach in the city of Brest. It was developed over the last century to offer Brest residents a vacation spot close to the city.

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Nestled in the picturesque backdrop of the Elorn and the port of Brest, the “Pont de Plougastel”, better known as “Pont Albert-Louppe”, rises into the sky. It served as the only connection across the river from 1930 to 1994, before the Iroise Bridge was added. Before this bridge dominated the landscape, people were solely dependent on ferry services. The majestic construction of the Pont Albert-Louppe stretches over 880 meters and towers 42 meters above sea level. What makes this bridge particularly remarkable are its three arches - with the largest of them holding the world record for concrete arch bridges at 186.4 meters. Nearby and in impressive contrast is the Iroise Bridge, built between 1991 and 1994, which crosses the Elorn between the towns of Relecq-Kerhuon and Plougastel. With a length of 800 meters and a span of 400 meters between its two pylons - which stand 83 meters above the deck - it was the bridge with the longest span in the world when it opened. It connects Brest with Quimper in Finistère and is reserved exclusively for car traffic. The closed Pont Albert-Louppe offers a privileged vantage point for pedestrians and photographers. From here you can not only capture the imposing Iroise Bridge in all its glory, but also enjoy a breathtaking view of the Elorn and the port of Brest. Among France's cable-stayed bridges, the Iroise Bridge takes third place, after the Pont de Normandie and the Pont de Saint-Nazaire, and ahead of the impressive Viaduc de Millau.

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The Albert-Louppe bridge, first called the Plougastel bridge and still called the first Plougastel bridge, crosses the mouth of the Élorn in the harbor of Brest to connect the communes of Plougastel-Daoulas to Relecq-Kerhuon. It has been closed to cars since the construction of the new bridge. Access is therefore now reserved for pedestrians, bicycles, rollerblades, etc.

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George
September 5, 2023, Anse du Moulin Blanc

View to the Atlantic.

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Frequently Asked Questions

What kind of terrain can I expect when hiking in Vallée du Costour?

The Vallée du Costour offers a diverse landscape, including lush forests with chestnut, oak, and beech trees, open meadows, and fields. A modest river winds through the valley. You'll encounter geological features like a gneiss layer and a 30-meter cliff overlooking a flooded quarry. Trails can range from easy strolls to more moderate routes, with some sections potentially steep or muddy, especially during winter.

Are there any historical sites or landmarks to see while hiking in Vallée du Costour?

Yes, the Vallée du Costour holds remnants of its industrial past. You can discover the former Poudrerie du Moulin Blanc, a gunpowder factory established in 1876. Look out for old storage buildings and two washhouses from 1912 and 1913, which were used in the production process. These sites offer a unique glimpse into the region's history.

What are the best viewpoints or natural features to look out for?

Hikers can enjoy captivating panoramic views of the Rade de Brest and the Anse du Moulin Blanc. Natural features include the largest water body, an old flooded quarry, and a retention pond. The valley is also home to a rich biodiversity, so keep an eye out for various bird species like the great spotted woodpecker and diverse flora.

How many hiking routes are available in Vallée du Costour?

There are over 340 hiking routes available in Vallée du Costour, catering to various preferences. This includes approximately 189 easy routes, 144 moderate routes, and a few more challenging options.

Are there any circular hiking routes in Vallée du Costour?

Yes, many routes in Vallée du Costour are circular. For example, you could try the Hiking loop from Pont de l'Iroise, an easy 6.1 km path, or the Viewing platform – Moulin Blanc Beach loop from Pont de l'Iroise, which covers 7.1 km.

What do other hikers say about the trails in Vallée du Costour?

The trails in Vallée du Costour are highly rated by the komoot community, with an average score of 4.3 stars from over 600 reviews. Hikers often praise the diverse landscapes, from lush forests to open meadows, and the blend of natural beauty with historical remnants.

Is Vallée du Costour suitable for family hikes?

Yes, the Vallée du Costour offers many trails suitable for families. There are numerous easy strolls through forests and meadows, providing a pleasant outdoor experience for all ages. The varied scenery and historical elements can also make for an engaging outing.

Are dogs allowed on the hiking trails in Vallée du Costour?

The Vallée du Costour is generally dog-friendly, making it a great place to hike with your canine companion. However, it's always recommended to keep dogs on a leash, especially in areas with wildlife or near other hikers, to ensure a safe and enjoyable experience for everyone.

How can I get to Vallée du Costour using public transport?

The Vallée du Costour is conveniently located near Brest, Guipavas, and Le Relecq-Kerhuon, making it accessible. While specific bus routes directly into the valley may vary, public transport options are available to reach the surrounding communes, from where you can access the valley. Check local Brest Métropole transport schedules for the most current information.

Where can I find parking for hiking in Vallée du Costour?

Given its proximity to urban areas and popularity, there are various access points around Vallée du Costour. Parking is typically available near trailheads or designated entry points in the surrounding communes like Guipavas or Le Relecq-Kerhuon. Look for signs indicating public parking areas when you arrive.

What is the best time of year to hike in Vallée du Costour?

The Vallée du Costour is enjoyable year-round, but each season offers a different experience. Spring and autumn provide pleasant temperatures and beautiful foliage. Summer is ideal for longer days, while winter hikes can be atmospheric, though some sections might be muddy. Always check local weather conditions before heading out.

Are there any moderate difficulty trails for more experienced hikers?

Yes, while many trails are easy, Vallée du Costour also offers moderate options. For instance, the View of the Bay – Moulin Blanc Beach loop from Pont de l'Iroise is a moderate 8.9 km path that includes panoramic views and some elevation changes, taking about 2 hours 27 minutes to complete.

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