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Routes
France
Pays de la Loire
Châteaubriant-Ancenis
La Grigonnais

Étang de Gruelleau – Abbaretz mine spoil tip loop from La Grigonnais

Routes
France
Pays de la Loire
Châteaubriant-Ancenis
La Grigonnais

Étang de Gruelleau – Abbaretz mine spoil tip loop from La Grigonnais

Moderate

8

riders

Étang de Gruelleau – Abbaretz mine spoil tip loop from La Grigonnais

03:59

57.0km

290m

Gravel riding

Moderate gravel 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: November 17, 2025

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Tips

Includes a segment in which cycling is not permitted

You'll need to dismount and push your bike.

62 m in total

Waypoints

A

Start point

Bus stop

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1

32.1 km

Gruellau Pond

Highlight • Other

Pond equipped for fishing, nature camping, with picnic tables, games for children..

Translated by Google •

Tip by

2

32.5 km

Étang de Gruelleau

Highlight • Lake

3

40.6 km

Abbaretz lagoon

Highlight • Other

A half-Mordor, half-Mad Max atmosphere with these reddish-orange marshes. The color is due to the oxidation of heavy metals contained in these highly acidic waters: iron, manganese, cobalt, and... arsenic. …

Translated by Google •

Tip by

4

42.0 km

Mine Lake

Highlight • Lake

This 40-meter-deep (!!!) pond occupies the former Abbaretz tin mine, which has been in operation since Roman times. It cannot be cycled around, but it is possible to do so …

Translated by Google •

Tip by

5

42.3 km

Abbaretz mine spoil tip

Highlight • Other

A truly amazing site. Bring a lock, as you have to leave your bike at the bottom of the steps.

Translated by Google •

Tip by

6

46.2 km

Chemin des Pérets

Highlight (Segment) • Trail

smooth farm track

Translated by Google •

Tip by

B

57.0 km

End point

Bus stop

Way Types & Surfaces

Way Types

35.6 km

9.77 km

5.37 km

4.21 km

1.07 km

854 m

152 m

Surfaces

23.6 km

18.5 km

13.0 km

1.14 km

763 m

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Elevation

Elevation

Highest point (80 m)

Lowest point (20 m)

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Weather

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Today

Saturday 22 November

5°C

4°C

70 %

If you start your activity now...

Max wind speed: 11.0 km/h

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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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