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Boitouze Trail – Mabille Valley Lake loop from Prinquiau

Routes

Mountain biking trails

Boitouze Trail – Mabille Valley Lake loop from Prinquiau

Moderate

4.8

(12)

160

riders

Boitouze Trail – Mabille Valley Lake loop from Prinquiau

02:35

38.4km

310m

Mountain biking

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

Last updated: August 26, 2026

Tips

Includes a segment in which cycling is not permitted

After 16.6 km for 74 m

Waypoints

Start point

Bus stop

Get Directions

5.29 km

On the edge of the Loire estuary, the small town of Savenay makes an excellent base camp for exploring the Brière regional natural park (PNR) which it borders. In its village, many shops offer catering and accommodation. Also, a railway station connects daily and several times a day the station of Nantes.

Translated by Google •

Tip by

21.3 km

Super single, a little technical

Highlight • Other

24.0 km

Lac de Savenay

Highlight • Lake

This lake is otherwise called the Mabille valley lake. It is an artificial lake.

Access to the leisure center is free. The activities offered here are: picnic on the bank, play areas for the youngest, fishing.

Translated by Google •

Tip by

24.1 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 (south of the road) by a wide and well-maintained wooded path. On the other hand, the northern part, wilder and quite rugged, is more for hiking than cycling. Crossing at the dam can be done using a footbridge.

Translated by Google •

Tip by

24.8 km

Mabille Valley Lake

Highlight • Lake

Lac de la Vallée Mabille, more commonly known as Lac de Savenay, is a beautiful body of water located at the eastern entrance to the town of Savenay. Artificial, the lake hosts many activities on its shores: a swimming pool, a campsite, a leisure park, a golf course and a hotel-restaurant.

Very famous among the locals, this little green setting is also a delight for long-distance hikers. Indeed, the iconic GR 3 meanders along its banks.

Translated by Google •

Tip by

25.0 km

View of the Countryside

Highlight • Viewpoint

25.6 km

Lac de la Vallée Mabile

Lake

38.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

14.7 km

9.24 km

7.39 km

3.85 km

3.15 km

< 100 m

Surfaces

15.1 km

9.41 km

6.71 km

4.33 km

2.58 km

244 m

Elevation

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

Highest point (80 m)

Lowest point (0 m)

Weather

Tuesday 25 August

25°C

17°C

71 %

Additional weather tips

Max wind speed: 18.0 km/h

to get more detailed weather forecasts along your route

Comments

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Boitouze Trail – Mabille Valley Lake loop from Prinquiau

Boitouze Trail

Boitouze Stream

Savenay

Super single, a little technical

Lac de Savenay

Mabille Valley Lake

Mabille Valley Lake

View of the Countryside

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