4.3
(24)
1,014
riders
174
rides
Road cycling around Lac De Guerledan offers diverse terrain in the heart of Brittany, centered around the region's largest artificial lake. The landscape features a mix of water, extensive forests like Quénécan, and undulating hills composed of sandstone and schist. The northern side of the lake provides flatter cycle paths, while the southern part is characterized by more challenging country lanes and climbs. This area provides varied road cycling opportunities amidst a "small mountain" feel.
Last updated: July 8, 2026
5.0
(1)
59
riders
33.4km
01:41
470m
470m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
12
riders
37.1km
01:49
380m
380m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.

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5.0
(1)
10
riders
10.5km
00:34
210m
210m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
7
riders
12.2km
00:46
240m
240m
Moderate road ride. Great for any fitness level. Some segments of this route may be unpaved and difficult to ride.
16
riders
60.3km
02:55
730m
730m
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride.
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Here the origin of the path can be seen: it was an old railway. The old station is well maintained.
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A path often in the shade, well maintained.
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The reconstruction is great! But we left some parts in ruins, which preserves the character of an old building.
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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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Very beautiful walk between the Abbey of Bon Repos and the lily-covered paths. Beautiful moorland landscape.
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Amazing camping which was open but quiet when I visited in early May 2025 (tip - many French campings don't open until later in May). I would give this 10/10 even with the slight disturbance of the tranquilité caused by the construction of an enormous zip wire across the lake. The camping is located a long way from 'civilisation', at least by bike. However.... it has such great facilities, like a decently stocked and not expensive épicerie, incredibly clean loos and showers, decent self-catering (including amazing Office de Randonneur - an actual indoor kitchen which hikers and bikers are free to use. All this and a private (ish) viewpoint over the lake. Oh and a depot du pain and café service in the morning. Pretty much perfect
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There are over 175 road cycling routes available around Lac De Guerledan, catering to various skill levels. You'll find a good mix, with 11 easy routes, 130 moderate routes, and 34 challenging options.
The region around Lac De Guerledan is enjoyable for road cycling throughout much of the year. Spring and autumn offer pleasant temperatures and beautiful scenery, while summer provides warmer weather, ideal for combining cycling with water activities on the lake. The extensive Quénécan Forest also provides shaded routes during hotter periods.
Yes, the northern side of Lac De Guerledan features flatter cycle paths, including sections of the V6 Cycle Path, which utilizes an old railway track. These paths offer scenic and generally flat rides, perfect for beginners or families looking for an easier experience. The Côte de Mûr-de-Bretagne – Brittany wall loop from Saint-Aignan is an example of an easy route.
Absolutely. The southern part of the lake is characterized by more undulating country lanes and significant climbs. The famous Côte de Mûr-de-Bretagne, known for its average gradient of 6.8% and sections reaching 15%, is a highlight for experienced riders. Routes like the Bon Repos Abbey – Côte de Mûr-de-Bretagne loop from Caurel incorporate this challenging ascent.
Yes, many routes around Lac De Guerledan are designed as loops, allowing you to start and finish at the same point. A full circuit around the lake covers approximately 36 km, integrating historical sites and natural beauty. Examples include the Bon Repos Abbey loop from La Gare and the Côte de Mûr-de-Bretagne – Bon Repos Abbey loop from Anse de Sordan.
Road cycling routes around Lac De Guerledan offer diverse scenery. You'll encounter the vast Landroannec Cove, the tranquil Shaded trail along Lake Guerlédan, and the impressive Guerlédan Dam. The routes also pass through the majestic Quénécan Forest, offering extensive wooded areas and panoramic views, and you might glimpse the Gorges du Daoulas or the wild heathland of Landes de Liscuis.
Yes, the region is rich in history. The 12th-century Bon Repos Abbey is a significant cultural site often integrated into cycling loops. You can also visit the impressive Guerlédan Dam, which offers panoramic views, and the historic Forges des Salles, one of Brittany's oldest ironworks. Sections of the Nantes-Brest Canal, with its locks like the Guerlédan Lock, also provide pleasant rides and historical insights.
Parking is generally available at key starting points around the lake, such as near Bon Repos Abbey, Anse de Sordan, or other popular access points for the cycling routes. These locations often serve as hubs for outdoor activities.
While public transport options directly to every starting point might be limited, major towns in the vicinity, such as Pontivy or Mûr-de-Bretagne, may offer bus services. From these towns, you can cycle to the lake's routes. It's advisable to check local transport schedules for the most up-to-date information.
Yes, the area around Lac De Guerledan, particularly at popular spots like Beau Rivage, Landroannec, and Anse de Sordan, offers various facilities. You'll find cafes, restaurants, and accommodation options ranging from campsites to hotels, perfect for refuelling or staying overnight after your ride.
The road cycling routes in Lac De Guerledan are highly rated by the komoot community, with an average score of 4.3 stars from over 20 reviews. Cyclists often praise the diverse terrain, from flatter paths on the northern side to challenging climbs like the Côte de Mûr-de-Bretagne, as well as the stunning blend of lake views, extensive forests, and historical sites.
Yes, for those preferring less strenuous rides, the northern side of Lac De Guerledan offers flatter cycle paths. These routes often follow sections of the V6 Cycle Path, which is built on an old railway track, providing a smooth and scenic experience with minimal elevation gain.
A full loop directly around Lac De Guerledan typically covers approximately 36 km (about 22 miles). However, many routes extend further, incorporating nearby attractions and varied terrain, with some popular loops ranging from 33 km to nearly 49 km, such as the Poulancre Valley loop from Saint-Aignan.


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