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Church of Pont-Saint-Martin – Grand-Lieu Lake Observatory loop from Nantes

Routes

Mountain biking trails

Church of Pont-Saint-Martin – Grand-Lieu Lake Observatory loop from Nantes

Moderate

4.4

(7)

riders

Church of Pont-Saint-Martin – Grand-Lieu Lake Observatory loop from Nantes

02:17

36.3km

80m

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: July 18, 2026

Waypoints

Start point

Bus stop

Get Directions

6.42 km

Located in the village of Passay in La Chevrolière, the Grand-Lieu Lake Ornithological Observatory is a soundproofed observation hut nestled in the heart of the Regional Nature Reserve, offering a unique viewpoint over the lake and its exceptional wildlife.

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34.4 km

Longer L'Ognon vers le Pont Neuf

Highlight (Segment) • Other

Shady and very peaceful path that runs along a part of the river "L'Ognon".
You can consider having a picnic there.

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Tip by

36.3 km

End point

Bus stop

Way Types & Surfaces

Way Types

15.8 km

12.0 km

4.12 km

2.99 km

1.06 km

385 m

< 100 m

Surfaces

14.3 km

12.6 km

8.42 km

622 m

433 m

Elevation

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

Weather

Monday 24 August

27°C

17°C

13 %

Additional weather tips

Max wind speed: 19.0 km/h

to get more detailed weather forecasts along your route

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Church of Pont-Saint-Martin – Grand-Lieu Lake Observatory loop from Nantes

Church of Pont-Saint-Martin

Grand-Lieu Lake Observatory

Longer L'Ognon vers le Pont Neuf

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