It is one of the largest lakes in Brittany with a length of 5.5 kilometers and a width of between 500 and 900 meters depending on the location. Lake Ploërmel …

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Matilde Maini

October 20, 2023

Cycling

This lake, one of the main bodies of fresh water in Brittany, was developed by monks in the 12th century. The flora and fauna are rich.

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Desirai

August 6, 2025

Cycling

Nice little spot to sit and have a snack peacefully by the water. It's right on the voie verte

Routes here

Best routes to View of Lac au Duc

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1. The V3 passing through the forest of Brocéliande and Le Roc-Saint-André — loop

68.3km

04:03

450m

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

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Hard

4.2

(13)

128

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2. Dukes' Lake – View of Lac au Duc loop from Les Hautes Rives

15.2km

01:08

70m

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

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Easy

4.1

(16)

102

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3. Dukes' Lake – View of Lac au Duc loop from Helléan

26.6km

01:49

210m

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

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Moderate

Details

Informations

Elevation 40 m

Weather

Sunday 15 February

11°C

7°C

-- %

Additional weather tips

Max wind speed: -- km/h

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Location: Loyat, Vannes, Brittany, France

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ploërmel

View of Lac au Duc

1. The V3 passing through the forest of Brocéliande and Le Roc-Saint-André — loop

2. Dukes' Lake – View of Lac au Duc loop from Les Hautes Rives

3. Dukes' Lake – View of Lac au Duc loop from Helléan

Other Popular Places to Check Out

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