The Saint-Nazaire U-boat bunker is one of five German U-boat bases built on the French Atlantic coast during World War II. The 301-meter-long bunker was built in just 16 months in 1941/42 using almost half a million cubic meters of concrete. Several hundred men were stationed here until May 1945; offices, workshops, and a medical center were housed under the roof, which was up to 9.60 meters thick. It was built on the site of the former overseas port from which steamers departed for Central America.

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1. Monsieur Hulot Beach – Statue of Monsieur Hulot loop from Sainte-Marguerite

27.6km

01:39

150m

Easy mountain bike ride. Great for any fitness level. Suitable for all skill levels.

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2. Tumulus of Dissignac – La Baule Bay loop from La Baule-Les-Pins

38.4km

02:11

210m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Moderate

3.7

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3. La Baule's Main Beach – Palm Trees Square loop from La Baule-Escoublac

45.6km

02:29

220m

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

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Informations

Elevation 10 m

Weather

Thursday 12 February

11°C

7°C

99 %

Additional weather tips

Max wind speed: 23.0 km/h

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Location: Pays de la Loire, France

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submarine bunker from world war 2

1. Monsieur Hulot Beach – Statue of Monsieur Hulot loop from Sainte-Marguerite

2. Tumulus of Dissignac – La Baule Bay loop from La Baule-Les-Pins

3. La Baule's Main Beach – Palm Trees Square loop from La Baule-Escoublac

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