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

Routes

Bike touring routes & trails

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

Moderate

4.6

(5)

riders

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

03:14

48.9km

380m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: May 14, 2026

Waypoints

Start point

Bus stop

Get Directions

8.86 km

Dirt Path

Highlight • Trail

very beautiful

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18.1 km

Pen Lan

Highlight • Other

18.8 km

Pen Lan Lighthouse

Highlight (Segment) • Monument

26.2 km

Bourgerel Bread Oven

Highlight • Structure

very impressive oven

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33.3 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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35.6 km

Pretty little road

Highlight • Other

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

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44.4 km

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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44.6 km

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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48.9 km

End point

Bus stop

Way Types & Surfaces

Way Types

23.5 km

11.5 km

6.24 km

4.89 km

1.54 km

1.16 km

< 100 m

Surfaces

27.3 km

8.13 km

7.06 km

6.13 km

233 m

< 100 m

Elevation

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

Highest point (60 m)

Lowest point (0 m)

Weather

Friday 3 July

28°C

13°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

to get more detailed weather forecasts along your route

Comments

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

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

Dirt Path

Pen Lan

Pen Lan Lighthouse

Bourgerel Bread Oven

Arzal Dam

Pretty little road

Old Port of La Roche-Bernard

Cannon Viewpoint of La Roche-Bernard

Nearby routes

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