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Routes
Bike touring routes & trails
France
Brittany
Pontivy
Langoëlan

Cascade Lock – Lock No. 138 of Bon Repos loop from Langoëlan

Routes
Bike touring routes & trails
France
Brittany
Pontivy
Langoëlan

Cascade Lock – Lock No. 138 of Bon Repos loop from Langoëlan

Hard

4.7

(18)

191

riders

Cascade Lock – Lock No. 138 of Bon Repos loop from Langoëlan

09:56

156km

1,060m

Cycling

Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: August 25, 2026

Waypoints

A

Start point

Bus stop

Get Directions

1

25.2 km

Guernal lock on the Nantes-Brest canal

Highlight • Other

The Guernal lock is located in the town of Neulliac. It was built around the 1800s and is accompanied by several buildings (houses, stores, bridges over locks) whose restoration has not been completed.

Translated by Google •

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2

27.5 km

Cascade Lock

Highlight • Bridge

Just before arriving in Pontivy the river Blavet crashes down a wide cascade, while the canal is channelled left through a lock. Pedestrians and bikers can cross the narrow metal …

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3

42.8 km

NB: This lock is equipped with public dry toilets and a mechanical repair station for self-service bicycles, pump, tools, frame rack, etc. In addition, the beverage dispenser also contains spare inner tubes!

Translated by Google •

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4

46.6 km

Last locks before reaching the barrage

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5

61.1 km

Lock No. 138 of Bon Repos

Highlight • Bridge

The 18th century canal lock has been shaped like a medieval bridge fitting to the old Abby, with a hostel in the old canal keeper's house, and a café on the opposite side from the Abby.

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6

69.7 km

One of the many locks on the canal near the village of Pléalauff. Just after, the bridge allowing you to cross the canal and reach the wash house. All on the Vélodyssée route.

Translated by Google •

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7

85.0 km

A stretch on the dam before the Trehu Moron dam.
The landscape is constantly changing. The canal meanders through the countryside here.
I love this landscape, and it's a good mood to drive here.

Translated by Google •

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8

135 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 •

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137 km

Étang de Trébel

Lake

B

156 km

End point

Bus stop

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Way Types & Surfaces

Way Types

91.5 km

42.3 km

15.9 km

3.47 km

3.30 km

< 100 m

Surfaces

91.3 km

46.0 km

15.4 km

3.57 km

170 m

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Elevation

Elevation

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

Highest point (260 m)

Lowest point (60 m)

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Weather

Powered by Foreca

Wednesday 26 August

24°C

14°C

37 %

Additional weather tips

Max wind speed: 13.0 km/h

to get more detailed weather forecasts along your route

Comments

May 22, 2022,🇫🇷TDF_Nord_1_04: Pontivy - Carhaix-Plouguer
More nature than today is no longer possible. . . far and wide no settlements, few people. Nature is allowed to spread out and the forest takes on almost jungle-like forms on the pathless side of the canal. A diverse world of birds finds its paradise here, we never saw any, but our trip was accompanied by a polyphonic concert …

Showing Translation

It felt like there were more meters in altitude today than calculated. A very poisonous climb in the lowest gear, otherwise up and down like a waltz. There are practically no shops, so take good care. The campsite is so-so. Tomorrow we turn right back to the Atlantic. 👍

Showing Translation

I know... there are a lot of photos... but the route is also long... and: I'm too tired after the tour to sort through it more precisely...

Showing Translation

Hi! 4 years after the western part towards Châteaulin, heading east towards Pontivy. Departure from Poullaouen by the Roscuff - Concarneau greenway to the Kergadigen lock then the Nantes-Brest canal to the Bon Repos abbey. Lunch break at the abbey café to recharge your sugar and fat 😋 then a bit of green wood to go around the Guerlédan lake, …

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