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Mountain biking trails

Kerdiston lake – The Glomel Cut loop from Treffrin

Mountain biking trails

Kerdiston lake – The Glomel Cut loop from Treffrin

Moderate

8

riders

Kerdiston lake – The Glomel Cut loop from Treffrin

02:40

45.0km

300m

Mountain biking

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: August 15, 2026

Waypoints

A

Start point

Parking

1

24.1 km

Pont Yannick Lock on the Nantes–Brest Canal

Highlight • Other

The old lock keeper's house has been converted to a private home, but well maintained.

Tip by

25.6 km

Étang de Trébel

Lake

3

26.0 km

Kerdiston lake

Highlight • Lake

The dams for the Canal de Nantes à Brest create a lake from the waters of a little stream, the bike trail passes on the back of the levy

Tip by

4

26.2 km

Great Trench of the Nantes to Brest Canal

Highlight • Monument

At an altitude of 184 m, the Glomel trench is the highest point of the Nantes-Brest canal and the watershed between the Blavet and Aulne basins. The canal project and …

Translated by Google •

Tip by

5

26.8 km

The Glomel Cut

Highlight (Segment) • Monument

This passage is the highest point of the canal. It was necessary to dig three million cubic meters of earth and rock to make the canal pass: as much as …

Translated by Google •

Tip by

6

30.3 km

Minguen lock climbing, Canal Nantes à Brest

Highlight • Other

7

35.0 km

Canal de Nantes à Brest

Highlight • River

B

45.0 km

End point

Parking

Way Types & Surfaces

Way Types

31.0 km

9.53 km

2.53 km

2.02 km

< 100 m

Surfaces

31.3 km

7.37 km

4.71 km

1.66 km

< 100 m

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Elevation

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

Highest point (240 m)

Lowest point (110 m)

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Weather

Powered by Foreca

Saturday 17 October

14°C

7°C

21 %

Additional weather tips

Max wind speed: 21.0 km/h

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