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Mountain biking trails

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

Mountain biking trails

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

Moderate

4.6

(48)

186

riders

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

02:35

34.4km

390m

Mountain biking

Moderate mountain bike ride. Good fitness required. Advanced riding skills necessary. The starting point of the route is accessible with public transport.

Last updated: October 8, 2026

Waypoints

A

Start point

Bus stop

1

8.94 km

Gaillard Footbridge

Highlight • Bridge

GR349 crossing point

Translated by Google •

Tip by

2

18.0 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 …

Translated by Google •

Tip by

3

18.0 km

Port of La Roche-Bernard

Highlight (Segment) • Settlement

very pretty port with its atypical rocks and of course some pretty boats

Translated by Google •

Tip by

4

21.8 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.

Translated by Google •

Tip by

5

22.9 km

Villaine Valley

Highlight • River

Very nice passage despite the luggage on our gravels. A beautiful trail.

Translated by Google •

Tip by

6

31.3 km

Very nice path

Highlight • Other

7

33.1 km

Sculpture on Trunk

Highlight • Other

8

33.7 km

Arzal Dam

Highlight • Monument

Built in 1970, the Arzal dam allows the regulation of the waters of the Vilaine and the storage of drinking water for the inhabitants of the region. Its construction allowed …

Translated by Google •

Tip by

B

34.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

11.7 km

11.1 km

7.53 km

2.20 km

1.14 km

652 m

< 100 m

Surfaces

12.2 km

9.61 km

5.81 km

5.13 km

1.28 km

301 m

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Elevation

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

Highest point (50 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Saturday 10 October

16°C

7°C

35 %

Additional weather tips

Max wind speed: 14.0 km/h

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