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Guildo Castle – View of the Bay loop from Saint-Cast-le-Guildo

Guildo Castle – View of the Bay loop from Saint-Cast-le-Guildo

Moderate

riders

Guildo Castle – View of the Bay loop from Saint-Cast-le-Guildo

02:39

59.4km

450m

Road cycling

Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is accessible with public transport.

Last updated: May 30, 2026

Tips

The surface along some of this route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 8.42 km for 849 m

After 9.35 km for 900 m

After 13.9 km for 430 m

Waypoints

Start point

Bus stop

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14.1 km

Guildo Castle

Highlight • Castle

The ruins of the Château du Guildo rise above the mouth of the Arguenon.
The castle was once the property of Prince Gilles of Brittany, whom his own brother, Duke …

Translated by Google •

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17.8 km

First View of the Ocean

Highlight • Viewpoint

Finally, we see the ocean! It's so restful. Be careful not to slip!! ⚠️ The road is often wet.

Translated by Google •

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18.1 km

Contemplating low tide 🏝

Highlight • Other

And yes, the ocean has tides and sometimes the landscape looks more like a swamp than a tide.

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35.8 km

Notre-Dame-de-Nazareth Church of Plancoët

Highlight • Religious Site

In this church there is a very old statue that a Breton peasant found at the bottom of a river.

Translated by Google •

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36.8 km

The Grand Passage of Plancoët

Highlight • Structure

This large passage looks like a "Court of Miracles".

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37.0 km

Plancoët Church

Highlight • Religious Site

The Saint-Sauveur de Plancoët church is in the "neo-Romanesque" style. A sign marks the passage of René de Châteaubriand who came to visit his grandmother in Plancoët.

Translated by Google •

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54.9 km

View of the Bay

Highlight • Viewpoint

59.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

34.7 km

13.5 km

6.06 km

3.35 km

1.26 km

532 m

< 100 m

Surfaces

53.1 km

4.61 km

1.26 km

407 m

< 100 m

Elevation

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

Highest point (110 m)

Lowest point (0 m)

Weather

Thursday 9 July

26°C

19°C

-- %

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Guildo Castle – View of the Bay loop from Saint-Cast-le-Guildo

Guildo Castle

First View of the Ocean

Contemplating low tide 🏝

Notre-Dame-de-Nazareth Church of Plancoët

The Grand Passage of Plancoët

Plancoët Church

View of the Bay

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