Routes

Planner

Features

Updates

App

Get the App

Routes

Mountain biking trails

The Glomel Cut – Kerdiston lake loop from Quéhélen

Routes

Mountain biking trails

The Glomel Cut – Kerdiston lake loop from Quéhélen

Moderate

riders

The Glomel Cut – Kerdiston lake loop from Quéhélen

02:19

31.4km

290m

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: April 26, 2026

Tips

Includes a segment in which cycling is not permitted

After 26.8 km for 132 m

Waypoints

Start point

Bus stop

Get Directions

3.54 km

Minguen lock climbing, Canal Nantes à Brest

Highlight • Other

5.53 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 to build the largest pyramid in Egypt!

The work was carried out in the 19th century by deserters imprisoned and sentenced to forced labor. Many did not survive the unimaginable working and hygienic conditions.

A book “Les Bagnards du canal de Nantes à Brest” traces the little-known history of the builders of the canal from Nantes to Brest.

Translated by Google •

Tip by

7.60 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 its passage through the center of Brittany dates back to Vauban, the decision and the route to Napoleon. The impressive trench allows the Aulne and Blavet watersheds to communicate via the canal.
The Grande Trenche of the Canal from Nantes to Brest was dug in the 19th century by deserters from the army of Louis XVIII. The 4000 convicts of Glomel had to move as much earth and rock as was necessary for the construction of a great pyramid in Egypt. It took 9 years to create this trench, more than 3 kilometers long, 100 meters wide and 23 meters deep.

Translated by Google •

Tip by

7.82 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

8.22 km

Étang de Trébel

Lake

10.4 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

19.6 km

Étang du Coroncq

Lake

22.3 km

Bois de Kerien

Forest

31.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

14.1 km

12.9 km

2.78 km

1.58 km

< 100 m

Surfaces

13.0 km

11.8 km

2.23 km

2.09 km

1.98 km

232 m

Elevation

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

Highest point (240 m)

Lowest point (130 m)

Weather

Sunday 24 May

32°C

18°C

0 %

Additional weather tips

Max wind speed: 14.0 km/h

to get more detailed weather forecasts along your route

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

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Nearby routes

Moderate

3.7

125

Huelgoat Lake – Huelgoat Forest loop from Collorec

03:55h

50.6km

710m

Hard

4.8

105

Roc'h Trevezel – Mont Saint-Michel of Brasparts loop from Huelgoat

05:28h

62.0km

950m

Moderate

3.7

112

Huelgoat Lake – Huelgoat Forest loop from Huelgoat

03:21h

43.3km

530m

Moderate

3.6

Huelgoat Lake – Huelgoat Forest loop from Huelgoat

02:34h

28.3km

490m

Moderate

4.7

The Fairies' Pond – Gouffre de Huelgoat Waterfall loop from Huelgoat

03:13h

38.1km

510m

Hard

Roc'h Trevezel – Huelgoat Lake loop from Huelgoat

08:05h

94.7km

1,490m

Hard

5.0

Mont Saint-Michel of Brasparts – Roc'h Trevezel loop from Huelgoat

07:40h

92.9km

1,460m

Moderate

3.9

Trembling Rock – Huelgoat Forest loop from Scrignac

02:42h

33.1km

570m

Hard

4.3

Huelgoat Lake – Mont Saint-Michel of Brasparts loop from Huelgoat

05:17h

62.7km

1,030m

Hard

4.5

113

Lock No. 138 of Bon Repos – Bon-Repos Abbey loop from Bon Repos sur Blavet

04:28h

56.1km

910m

Moderate

4.5

The Fairies' Pond – Gouffre de Huelgoat Waterfall loop from La Gare de Scrignac

03:39h

44.6km

510m

Moderate

4.3

Gouffre de Huelgoat Waterfall – Huelgoat Forest loop from Huelgoat

01:46h

19.0km

380m

The Glomel Cut – Kerdiston lake loop from Quéhélen

Minguen lock climbing, Canal Nantes à Brest

The Glomel Cut

Great Trench of the Nantes to Brest Canal

Kerdiston lake

Pont Yannick Lock on the Nantes–Brest Canal

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️