4.3
(711)
5,820
hikers
336
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.
Last updated: June 26, 2026
4.4
(5)
102
hikers
6.78km
01:48
70m
70m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
4.6
(8)
170
hikers
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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3.3
(3)
32
hikers
5.36km
01:28
80m
80m
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels.
2.7
(3)
15
hikers
8.25km
02:16
140m
140m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
4.7
(3)
9
hikers
16.3km
04:28
250m
250m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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A magnificent landscape on both sides!!!
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feet in the water while being in the city.
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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.
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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 breathtaking landscape of Brest, it towers majestically above the Élorn - the Pont de l'Iroise. Its impressive silhouette, spanning the river between Le Relecq-Kerhuon and Plougastel-Daoulas, offers both locals and visitors an impressive perspective of the region. As you cycle across the bridge, you are accompanied by a magical panorama: If you look inland, the scenery opens up to a picturesque interplay of land and water. If you look to the other side, your eye will be rewarded with an unforgettable sea view. The bridge is a gift for cyclists. Here, in the flatter part of Brest, cycling is particularly pleasant. There is also a wonderful view of the city from here. The technical specifications of the Iroise Bridge are also remarkable. Located on the RN165, which connects Brest and Quimper, it is one of the most impressive cable-stayed bridges in France. It ranks in the list of main spans just behind the famous Pont de Normandie and the Pont de Saint-Nazaire, but ahead of the imposing Viaduc de Millau. But it's not just their size that makes them a highlight in the region. Photographers particularly appreciate the smaller bridge, which is closed to cars. From here you can capture the imposing Pont de l'Iroise in all its splendor.
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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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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