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Routes
France
Brittany
Saint-Malo
La Gouesnière

Le Châtelier Lock – Mordreuc and its tidal mill loop from La Gouesnière - Cancale - Saint-Méloir-des-Ondes

Routes
France
Brittany
Saint-Malo
La Gouesnière

Le Châtelier Lock – Mordreuc and its tidal mill loop from La Gouesnière - Cancale - Saint-Méloir-des-Ondes

Hard

2

riders

Le Châtelier Lock – Mordreuc and its tidal mill loop from La Gouesnière - Cancale - Saint-Méloir-des-Ondes

04:21

68.4km

540m

Gravel riding

Hard gravel ride. Very 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 12, 2026

Tips

Includes a segment in which cycling is not permitted

After 12.0 km for 54 m

Waypoints

A

Start point

Train Station

Get Directions

1

12.6 km

Rance Tidal Power Station – View of the Bay

Highlight • Monument

Inside there is a visitor center, where you can get a lot of information about the construction and the function of the tidal power plant. One can also take a …

Translated by Google •

Tip by

2

28.6 km

Cave by the Rance River

Highlight • Cave

3

40.0 km

Gallo-Roman path

Highlight (Segment) • Trail

Nice little sunken path between greenway and towpath. Reserved for ATVs in wet weather as it can get very greasy

Translated by Google •

Tip by

4

43.6 km

La Vicomté-sur-Rance Marina

Highlight • Other

The port of Lyvet, located in the commune of Vicomté-sur-Rance, is on the right bank of the Rance maritime basin just upstream of the Châtelier lock

Translated by Google •

Tip by

5

44.1 km

Le Châtelier Lock

Highlight • Structure

The lock separates the river Rance from the maritime Rance.

Translated by Google •

Tip by

6

44.3 km

Carrelet fishing huts on the Rance

Highlight • Structure

The carrelet huts are small constructions on stilts installed on the Rance maritime and intended for fishing with carrelet, a square fishing net stretched between four poles.
Sheds on stilts …

Translated by Google •

Tip by

7

46.0 km

Lessard Viaduct

Highlight • Historical Site

railway viaduct

Translated by Google •

Tip by

8

50.7 km

Mordreuc and its tidal mill

Highlight • Historical Site

From the old Breton "Mor-truc", crossing the sea, or "Mor-Douiz", sea of the druids, Mordreuc is a crossing point from one bank to the other of the Rance.
Before the …

Translated by Google •

Tip by

B

68.4 km

End point

Train Station

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Way Types & Surfaces

Way Types

31.8 km

16.7 km

13.8 km

5.28 km

641 m

216 m

Surfaces

22.1 km

20.3 km

16.7 km

7.49 km

1.84 km

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Elevation

Elevation

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

Highest point (80 m)

Lowest point (0 m)

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Weather

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Monday 25 May

32°C

19°C

0 %

Additional weather tips

Max wind speed: 15.0 km/h

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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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04:35h

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