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Montée de la Vallée Denis – Le petit St. Michel loop from Saint-Cast-le-Guildo

Routes

Bike touring routes & trails

Montée de la Vallée Denis – Le petit St. Michel loop from Saint-Cast-le-Guildo

Hard

4.0

(4)

riders

Montée de la Vallée Denis – Le petit St. Michel loop from Saint-Cast-le-Guildo

03:39

53.0km

580m

Cycling

Hard bike ride. Very 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: April 11, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Parc naturel régional Vallée de la Rance - Côte d'Émeraude

Waypoints

Start point

Parking

Get Directions

11.2 km

View of Gilles de Bretagne Castle from Pont René Pleven

Highlight • Viewpoint

From the bridge, enjoy the view of the ruins of the castle on the right bank of the Arguenon. In the 15th century, Gilles van Bretagne lived here, a poet …

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11.8 km

La vue de grand-père

Viewpoint

12.6 km

Route et piste de la Petite Suisse

Highlight (Segment) • Other

Nice quiet gravel trail through the forest

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19.7 km

Matignon

Highlight • Settlement

The town was born in the 11th century around a castle built by the lord of Matignon, whose heiress married Étienne Gouyon in the 12th century. It was a descendant …

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20.1 km

The Petite Fontaine Washhouses

Highlight • Monument

Old community laundry bassin in use until the mid 20th century

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32.8 km

Marais des Salines Wooden Bridge

Highlight • Bridge

The Marais Bridge is a reinforced concrete bridge built at the beginning of the 20th century for the Yffignac-Matignon railway line of the Petit Train des Côtes du Nord. It …

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33.9 km

Montée de la Vallée Denis

Highlight • Other

Ascent with a view of the entire bay of Sables d'Or

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35.6 km

Le petit St. Michel

Highlight • Other

At low tide you can walk across. There is a tide table on the beach so you can return in time before high tide. Otherwise: sleep under the stars.

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39.0 km

Côtière Footbridge

Highlight • Bridge

The longest footbridge in Côtes d'Armor crosses the Sables-d'Or-les-pins marsh. It is an old railway bridge, restored in 2013 to facilitate the passage of hikers and cyclists.

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53.0 km

End point

Parking

Way Types & Surfaces

Way Types

25.8 km

10.9 km

6.20 km

4.36 km

3.24 km

2.56 km

Surfaces

26.2 km

19.6 km

6.69 km

454 m

< 100 m

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)

Weather

Today

Thursday 2 July

23°C

14°C

0 %

Additional weather tips

Max wind speed: 20.0 km/h

to get more detailed weather forecasts along your route

Comments

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Montée de la Vallée Denis – Le petit St. Michel loop from Saint-Cast-le-Guildo

View of Gilles de Bretagne Castle from Pont René Pleven

Route et piste de la Petite Suisse

Matignon

The Petite Fontaine Washhouses

Marais des Salines Wooden Bridge

Montée de la Vallée Denis

Le petit St. Michel

Côtière Footbridge

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