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Old Port of La Roche-Bernard – Arzal Dam loop from La Roche-Bernard

Old Port of La Roche-Bernard – Arzal Dam loop from La Roche-Bernard

Moderate

5.0

(2)

riders

Old Port of La Roche-Bernard – Arzal Dam loop from La Roche-Bernard

02:38

46.2km

390m

Gravel riding

Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: May 14, 2026

Waypoints

Start point

Parking

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346 m

Old Port of La Roche-Bernard

Highlight • Settlement

The stones, weathered by time, and the steep alleyways tell the story of this "Small Town of Character," born of the sea and maritime trade. Clinging to the banks of …

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543 m

Cannon Viewpoint of La Roche-Bernard

Highlight • Viewpoint

Labeled a Small City of Character, La Roche-Bernard is full of stories, especially in the heart of its old quarter.

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13.1 km

Dirt Path

Highlight • Trail

very beautiful

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23.9 km

This sunken and very shaded path connects Kerantré to Moustoir, just in front of the Vilaine. Be careful because, in rainy weather, it can be difficult to walk along (muddy ground with a high risk of slipping).

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32.9 km

Arzal Dam

Highlight • Monument

The Arzal dam is built on the Vilaine estuary between Arzal and Camoël. It is the largest estuary dam in Europe. It is 500 meters long and has a sea …

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36.7 km

Pretty little road

Highlight • Other

Pleasant section of the Rance and Vilaine cycle route, between Vieille Roche and Keraudrain.

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43.7 km

Étier de Ran Coet

Highlight • Trail

This route of about 34 kilometers is very interesting and amazing, but also demanding on physical condition and technicality, but I recommend it for those who like MTB Cross country.

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46.2 km

End point

Parking

Way Types & Surfaces

Way Types

22.9 km

12.0 km

5.61 km

2.51 km

1.99 km

1.16 km

< 100 m

Surfaces

21.2 km

10.0 km

7.88 km

6.94 km

154 m

< 100 m

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (70 m)

Lowest point (0 m)

Weather

Tuesday 19 May

18°C

11°C

18 %

Additional weather tips

Max wind speed: 19.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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Old Port of La Roche-Bernard – Arzal Dam loop from La Roche-Bernard

Old Port of La Roche-Bernard

Cannon Viewpoint of La Roche-Bernard

Dirt Path

Chemin creux de Kerantré

Arzal Dam

Pretty little road

Étier de Ran Coet

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