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Routes
Bike touring routes & trails
France
Pays de la Loire
Nantes
Pont-Saint-Martin

Gravel path in the forest – The Sharp Stone loop from Pont-Saint-Martin

Routes
Bike touring routes & trails
France
Pays de la Loire
Nantes
Pont-Saint-Martin

Gravel path in the forest – The Sharp Stone loop from Pont-Saint-Martin

Easy

5.0

(2)

23

riders

Gravel path in the forest – The Sharp Stone loop from Pont-Saint-Martin

01:39

25.4km

60m

Cycling

Easy bike ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: June 10, 2026

Waypoints

A

Start point

Bus stop

Get Directions

1

6.82 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.

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2

11.7 km

The Acheneau

Highlight • River

A place on the bridge overlooking the Acheneau river. The river is 30 km long. An interesting point is that this watercourse has such a slight slope that its course …

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3

11.7 km

Window over Lake Grand-Lieu

Highlight • Other

The lake is a natural site and an ornithological reserve and its access is very limited to the public. There are not so many views on this one. You can find them on the lacdegrandlieu.com website

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4

18.6 km

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

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5

18.6 km

The Sharp Stone

Highlight • Other

A beautiful view of the Grand Lieu lake

Translated by Google •

Tip by

6

23.1 km

Port de l'Halbrandière

Highlight • Other

Pretty little port located on the Ognon river

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B

25.4 km

End point

Bus stop

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Way Types & Surfaces

Way Types

7.63 km

7.52 km

5.16 km

4.69 km

462 m

Surfaces

11.9 km

8.04 km

5.26 km

219 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

Today

Friday 10 July

38°C

24°C

34 %

Additional weather tips

Max wind speed: 15.0 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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