The Château de la Groulais was the largest fortress in the region at the time and was the home of several personalities, including Olivier V de Clisson and Marie Bonaparte, etc.

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Fred

April 9, 2025

Cycling

Beautiful medieval castle. The main building is more recent. As a side note, the Isac River fed the castle's imposing moats, now dry, before being channeled to the current marina.

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Guillaume Favez

August 20, 2021

Cycling

Blain Castle is a medieval fortress built in the 12th century.

This historic monument now houses a ginguette, a lodge and even an escape game!

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Best routes to Château de la Groulais

4.6

(53)

431

riders

1. Château de la Groulais – Quay at Sucé-sur-Erdre loop from Notre-Dame-des-Landes

93.5km

06:28

360m

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard

4.7

(52)

383

riders

2. Paudais lock – Green Slate Gravel Path loop from Saint-Emilien-de-Blain

81.3km

05:02

120m

Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.

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Hard

4.8

(47)

218

riders

3. Port of Blain – Lock 11 — La Prée loop from Saint-Emilien-de-Blain

40.4km

02:27

60m

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Moderate

Details

Informations

Elevation 70 m

Weather

Sunday 8 February

11°C

3°C

96 %

Additional weather tips

Max wind speed: 27.0 km/h

Most visited during

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Location: Blain, Châteaubriant-Ancenis, Pays de la Loire, France

Other Popular Places to Check Out

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Chapelle de La Magdelaine d'Iff

Écluse du Pas d'Héric sur le canal de Nantes à Brest

Rigole d'alimentation

Écluse de Melneuf

Écluse de Bougard

Rive du canal sous les arbres

Château de la Groulais

1. Château de la Groulais – Quay at Sucé-sur-Erdre loop from Notre-Dame-des-Landes

2. Paudais lock – Green Slate Gravel Path loop from Saint-Emilien-de-Blain

3. Port of Blain – Lock 11 — La Prée loop from Saint-Emilien-de-Blain

Other Popular Places to Check Out

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