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Routes
Bike touring routes & trails
France
Pays de la Loire
Nantes
Saint-Jean-De-Boiseau

The Sharp Stone – Gravel path in the forest loop from Saint-Jean-de-Boiseau

Routes
Bike touring routes & trails
France
Pays de la Loire
Nantes
Saint-Jean-De-Boiseau

The Sharp Stone – Gravel path in the forest loop from Saint-Jean-de-Boiseau

Moderate

4.7

(3)

9

riders

The Sharp Stone – Gravel path in the forest loop from Saint-Jean-de-Boiseau

02:13

32.7km

100m

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: April 24, 2026

Tips

Includes a segment in which cycling is not permitted

After 16.3 km for 81 m

Waypoints

A

Start point

Bus stop

Get Directions

459 m

Bois des Fous

Forest

2

18.9 km

Lake Grand-Lieu, Pierre Aiguë site

Highlight • Lake

Accessible to everyone except in winter when the lake doubles its size.

Translated by Google •

Tip by

3

18.9 km

Very good spot for a panoramic view of the lake.
Bird observatory on the path on the right

Translated by Google •

Tip by

4

18.9 km

The Sharp Stone

Highlight • Other

A beautiful view of the Grand Lieu lake

Translated by Google •

Tip by

5

19.9 km

Gravel path in the forest

Highlight • Other

A must when you want to go around the lake, or when you go to the Pierre-Aigüe site.

Translated by Google •

Tip by

6

32.1 km

Fools' Wood

Highlight • Other

A small fresh wood where it is good to stop to enjoy the calm and freshness

Translated by Google •

Tip by

B

32.7 km

End point

Bus stop

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Way Types & Surfaces

Way Types

9.77 km

7.77 km

6.53 km

4.51 km

4.07 km

Surfaces

13.6 km

9.50 km

8.87 km

488 m

225 m

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Elevation

Elevation

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

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Weather

Powered by Foreca

Wednesday 15 July

31°C

21°C

76 %

Additional weather tips

Max wind speed: 10.0 km/h

to get more detailed weather forecasts along your route

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

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