4.5
(68)
585
riders
46
rides
Mountain biking around Lac De Guerledan offers a diverse landscape centered around Brittany's largest artificial lake. The region features undulating terrain with steep-sided valleys, wooded ridges, and extensive areas of moors and gorse, particularly within the vast Quénécan Forest. Riders can expect a mix of water, forest, heathland, and pasture environments, providing varied technical sections and elevation changes. The area is characterized by a "small mountain"-like topography, offering a dynamic backdrop for mountain bike trails.
Last updated: May 23, 2026
4.0
(5)
45
riders
19.2km
01:19
240m
240m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
8
riders
10.7km
00:43
120m
120m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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7
riders
19.1km
01:22
260m
260m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
6
riders
10.9km
00:47
230m
230m
Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.
5.0
(1)
6
riders
20.1km
01:33
360m
360m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
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This climb is often used by cycling races, particularly the Tour de France. A fairly long climb (2.2 km) with a very steep first section. Average gradient of 6.55% with a maximum of 15%. https://profils.cols-cyclisme.com/2811.svg
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Well-known to Breton cyclists, the Côte de Mûr-de-Bretagne has become a classic of the Tour de France, with its characteristic straight climb. Although short, it can get your thighs burning with more than 500 meters at over 10% and a peak at over 13%.
3
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avoid this climb if possible
0
0
Caution: Be careful when descending; the descent can be perilous due to the slope; you can quickly get carried away by the speed. Beware of the speed and crosswind combination with high-profile wheels 😱🫣
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No bikes allowed, dedicated to pedestrians and people with reduced mobility Another bike path between this passage and the cycle path
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View of the old Cistercian abbey from the 12th century.
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beautiful Panorama next to the Ste Trephine chapel
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There are over 45 mountain bike trails listed on komoot around Lac De Guerledan. The region itself boasts an extensive network of over 300 kilometers of marked trails, catering to all skill levels from beginners to experienced riders.
Yes, Lac De Guerledan offers a good selection of trails for beginners and families. On komoot, you'll find 14 easy-rated mountain bike routes. These trails provide a gentle introduction to the region's diverse landscapes. An example of an easy path is the Brittany wall – Côte de Mûr-de-Bretagne loop from Saint-Aignan, which is 6.7 miles (10.9 km) long.
The terrain around Lac De Guerledan is characterized by its 'small mountain'-like topography, featuring undulating landscapes with steep-sided valleys, wooded ridges, and extensive areas of moors and gorse, especially within the vast Quénécan Forest. You'll encounter a mix of water, forest, heathland, and pasture environments, with trails offering varied technical sections and elevation changes.
Yes, many of the mountain bike trails around Lac De Guerledan are designed as loops, allowing you to start and finish at the same point. For example, the popular View of Lake Guerlédan – Magnificent viewpoint loop from Caurel offers stunning lake views, and the Bon Repos Abbey – Lock No. 138 of Bon Repos loop from Saint-Gelven combines natural beauty with historical sites.
The region is rich in natural and historical attractions. You can ride past the historic Bon Repos Abbey, explore sections of the Nantes-Brest Canal with its lock system, or visit the impressive Guerlédan Dam. The trails also offer numerous scenic viewpoints overlooking the lake, such as those found on the View of Lake Guerlédan loops.
Yes, the dedicated mountain bike base in the Lac De Guerledan area provides services such as bike rentals, including electric-assist bikes. This makes it convenient for visitors who don't bring their own equipment to explore the trails.
The mountain bike routes in Lac De Guerledan are highly rated by the komoot community, with an average score of 4.6 stars from over 80 reviews. Riders often praise the diverse landscapes, the extensive Quénécan Forest, and the variety of trails that cater to different skill levels, from easy rides to challenging technical sections.
Absolutely. Lac De Guerledan offers several challenging routes for experienced mountain bikers. The region's undulating terrain includes significant elevation changes and technical sections, such as rocky portions and singletracks. A notable difficult route is the Magnificent viewpoint – View of Lake Guerlédan loop from Caurel, which spans 55.3 km with over 930m of elevation gain.
Yes, sections of the historic Nantes-Brest Canal run alongside Lac De Guerledan, offering pleasant cycling paths. These towpaths typically have a gravel surface suitable for mountain bikes and provide a flatter alternative to the more undulating forest trails, allowing you to explore the canal's lock system.
The region's diverse landscapes can be enjoyed throughout much of the year. Spring and autumn generally offer pleasant temperatures and vibrant scenery, with the Quénécan Forest displaying beautiful colors. Summer is also popular, though trails might be busier. It's always a good idea to check local weather conditions before heading out.
While specific cafes or pubs directly on every trail are not listed, the villages and towns surrounding Lac De Guerledan, such as Caurel, Saint-Aignan, and Saint-Gelven, offer amenities where you can find places to eat and drink. The beaches and coves like Beau Rivage and Sordan Cove also serve as popular spots for relaxation and often have facilities nearby.
Generally, dogs are welcome on many outdoor trails in France, especially in natural areas like the Quénécan Forest. However, it's always recommended to keep them on a leash, particularly in areas with wildlife or near livestock, and to check for any specific local regulations or signage on individual trails or protected areas.


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