4.3
(712)
4,057
riders
187
rides
Touring cycling routes around Lac D'Arzal are characterized by the unique estuarine environment of the Vilaine River, regulated by the prominent Arzal Dam. The landscape features a mix of calm freshwater sections upstream of the dam, marshlands, and coastal areas as the river meets the Atlantic. Cyclists can expect varied terrain, including flat paths along the estuary and dam, as well as routes with gentle slopes through traditional Breton villages.
Last updated: October 7, 2026
4.6
(35)
149
riders
56.4km
03:42
370m
370m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
72
riders
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

4.0
(5)
84
riders
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3.9
(7)
37
riders
85.2km
05:47
680m
680m
Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(4)
38
riders
29.2km
02:13
250m
250m
Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Although the nave retains some older parts, the current church is a recent construction (1905). Bakery opposite the church and toilets with water on its left side.
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Neo-Gothic style church built in 1877, it replaces an old 11th-century Romanesque church that had become too small and dilapidated. Interesting small built heritage in the village center.
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Une petite baie qui fait partie de la grande baie de Pont-Mahé. La plage se découvre largement à marée basse et semble prisée des pêcheurs à pied locaux.
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Beautiful beach with ochre cliffs softer than at the Mine d'Or.
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I was stunned by the number of boats that winter here.
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A very beautiful city, both for its iconic port at the foot of the rocks and for the old town and its charming alleys.
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An incredible place that you discover around a bend. Magnificent!
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There are over 180 touring cycling routes available around Lac D'Arzal, offering a wide range of options for different skill levels and preferences. The komoot community has explored these routes over 3000 times, providing an average rating of 4.5 stars.
The terrain around Lac D'Arzal is quite varied. You'll find flat sections along the impressive Arzal Dam and the Vilaine River estuary, which are ideal for relaxed rides. Other routes feature gentle slopes as they pass through traditional Breton villages and along the Vilaine Valley, offering rewarding views.
Yes, Lac D'Arzal offers many easy touring cycling routes. Approximately 70 routes are classified as easy, perfect for beginners or families looking for a relaxed ride. An example is the Old Port of La Roche-Bernard – Pretty little road loop from La Roche-Bernard, which is 18.4 km long with minimal elevation.
For experienced cyclists seeking more of a challenge, Lac D'Arzal has about 30 routes classified as difficult. These routes typically feature longer distances and more significant elevation changes, providing a rewarding experience for those looking to push their limits.
The spring and autumn months generally offer the most pleasant conditions for touring cycling in Lac D'Arzal, with milder temperatures and fewer crowds. Summer is also popular, but can be warmer, especially during midday. The region's coastal influence means weather can be variable, so it's always good to check the forecast.
Yes, many touring cycling routes in the Lac D'Arzal area are designed as loops, allowing you to start and end at the same point. For instance, the Prières Abbey boundary marker – Pen Lan Lighthouse loop from Arzal offers a moderate 28.2 km circular ride.
While cycling, you'll encounter the impressive Arzal Dam, Europe's largest estuarine dam, which regulates the Vilaine River. The routes often follow the picturesque Vilaine River estuary, known for its calm waters and marshlands. Further afield, you might reach the distinctive orange-colored cliffs of the Plage de la Mine d'Or near Pénestin.
Absolutely. Many routes pass through or near charming historical sites. The town of La Roche-Bernard, a 'Small Town of Character,' is a highlight with its old houses and steep alleyways. You can also see the Arzal Dam and Port, and traditional Breton villages like Lantiern, featuring 16th and 17th-century architecture.
The area is highly rated by the komoot community, with an average score of 4.5 stars from over 500 reviews. Reviewers often praise the diverse landscapes, from the tranquil Vilaine River banks to the coastal views, and the well-maintained paths that make for enjoyable rides. The blend of natural beauty and charming villages is frequently highlighted.
Yes, the 'La Littorale' cycle route is a notable path that crosses the Arzal Dam itself. This route provides a unique experience of cycling over the largest estuarine dam in Europe and connects to other towns like Pénestin, offering varied terrain and views of the Vilaine River. You can find more information about this route on France Vélo Tourisme.
Yes, the touring cycling routes around Lac D'Arzal connect to broader cycling networks. For example, sections of the Vélodyssée and the V45 cycle route along the Breton coastline are accessible from the area, allowing for longer, multi-day tours. The route from Redon to Arzal is part of this network, as detailed on France Vélo Tourisme.
While Lac D'Arzal is primarily focused on the Vilaine River estuary, some routes extend towards the coast, offering glimpses of the Atlantic. The 'La Littorale' cycle route, for instance, connects Arzal to Pénestin, where you can find coastal landscapes and the Old Port of La Roche-Bernard – The Gold Mine loop from La Roche-Bernard also reaches the Plage de la Mine d'Or, which is on the coast.


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