11
riders
Kerdiston lake – Gymnasium in Loudéac loop from Rostrenen
02:18
52.0km
460m
Road cycling
Moderate road ride. Good fitness required. Some segments of this route may be unpaved and difficult to ride. The starting point of the route is right next to a parking lot.
Last updated: June 10, 2026
Tips
The surface along some of this route may not be suitable
Some segments of your route comprise a surface that may not be suitable for your chosen sport.
After 4.86 km for 445 m
After 22.3 km for 1.03 km
Waypoints
Start point
Parking
Get Directions
5.08 km
Kerdiston lake
Highlight • Lake
Tip by
5.30 km
Great Trench of the Nantes to Brest Canal
Highlight • Monument
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
22.8 km
Kerhun Lock No. 191 on the Nantes–Brest Canal
Highlight • Structure
Tip by
27.3 km
Gymnasium in Loudéac
Highlight • Rest Area
Tip by
52.0 km
End point
Parking
Way Types & Surfaces
Way Types
36.4 km
13.2 km
1.36 km
1.06 km
< 100 m
< 100 m
Surfaces
50.6 km
1.33 km
< 100 m
< 100 m
< 100 m
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Elevation
Highest point (290 m)
Lowest point (100 m)
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Weather
Powered by Foreca
Thursday 16 July
26°C
14°C
19 %
Additional weather tips
Max wind speed: 14.0 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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