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Saint-Nazaire Submarine Base

Saint-Nazaire Submarine Base

Highlight • Historical Site

Saint-Nazaire Submarine Base

Recommended by 23 cyclists out of 24

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Location: Pays de la Loire, France

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Top cycling routes to Saint-Nazaire Submarine Base

4.5

(2)

riders

1. Straw Bridge – Cycle bridge in Trignac loop from Montoir-de-Bretagne

33.2km

01:56

110m

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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Easy

5.0

(1)

riders

2. Pornichet – Cycle bridge in Trignac loop from Montoir-de-Bretagne

45.9km

02:40

140m

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

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Moderate

riders

3. Tumulus of Dissignac – Straw Bridge loop from Plaisance

38.6km

02:12

110m

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

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Moderate

Tips

MaxBrompton

June 20, 2023

Created during the Second World War, this huge bunker housed a German U-Boat base.
Saint-Nazaire, and you quickly realize this as you walk through the district, was heavily bombarded by the allies, but the base held out. Many operations were set up by the English to prevent the submarines from leaving the port, finally with success, but after the landing was created what was called the Pocket of Saint-Nazaire, making city the last city occupied by the coalition, after the fall of the Nazi regime.
This base is clearly worth the detour.

Translated by Google •

Thomas

September 5, 2025

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.

Translated by Google •

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Details

Informations

Elevation 10 m

Weather

Sunday 14 December

13°C

9°C

15 %

If you start your activity now...

Max wind speed: 27.0 km/h

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See rides here

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Location: Pays de la Loire, France

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Saint-Nazaire Submarine Base

1. Straw Bridge – Cycle bridge in Trignac loop from Montoir-de-Bretagne

2. Pornichet – Cycle bridge in Trignac loop from Montoir-de-Bretagne

3. Tumulus of Dissignac – Straw Bridge loop from Plaisance

Other Popular Places to Check Out

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