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Routes
Bike touring routes & trails
France
Pays de la Loire
Nantes
Le Temple-De-Bretagne

Mabille Valley Lake – Observatoire le Rocher loop from Le Temple-de-Bretagne

Routes
Bike touring routes & trails
France
Pays de la Loire
Nantes
Le Temple-De-Bretagne

Mabille Valley Lake – Observatoire le Rocher loop from Le Temple-de-Bretagne

Moderate

4.9

(7)

4

riders

Mabille Valley Lake – Observatoire le Rocher loop from Le Temple-de-Bretagne

02:33

42.1km

250m

Cycling

Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: February 27, 2026

Tips

Includes a segment in which cycling is not permitted

After 17.7 km for 186 m

Waypoints

A

Start point

Bus stop

Get Directions

1

15.5 km

Mabille Valley Lake

Highlight • Other

The Lac de la Vallée Mabille, or Lac de Savenay, is a beautiful artificial reservoir that is worth a detour. By bike, you can easily go around the southern part …

Translated by Google •

Tip by

2

20.1 km

Observatoire le Rocher

Highlight • Other

Allows you to observe the surrounding flora and fauna

Translated by Google •

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3

29.2 km

Marais de la Roche

Highlight • Other

A 335-hectare marsh located just north of Cordemais. This marsh is mostly flooded between November and March, with water levels that can make some paths impassable. You can see many …

Translated by Google •

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4

33.4 km

Lot Marshes

Highlight • Natural

Swamp only visible in winter and early spring. Many small birds, waders and raptors.
The rest of the year they are meadows used as pastures, more or less water depending on the weather and the tides.

Translated by Google •

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B

42.1 km

End point

Bus stop

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Way Types & Surfaces

Way Types

38.0 km

2.46 km

1.12 km

461 m

114 m

Surfaces

21.1 km

19.2 km

1.52 km

160 m

< 100 m

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Elevation

Elevation

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

Highest point (90 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Monday 25 May

34°C

19°C

0 %

Additional weather tips

Max wind speed: 18.0 km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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