Tips
Fred
July 30, 2025
Cycling
The toughest climb in Loire-Atlantique, in my opinion. Quite long (> 500 m) with an average gradient of 12% and sections of over 18% according to my Garmin. The winding route reinforces the "mountain" feel.
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Gustave
August 9, 2025
Cycling
The slope of Mont Piron is very steep (14% maximum gradient)
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Nearby routes
Best routes near Lacets du Mont Piron
4.5
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Hard bike ride. Very good fitness required. You may need to push your bike for some segments of this route.
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4.8
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177
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4.5
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Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Details
Informations
Elevation 10 m
Weather
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Wednesday 1 July
26°C
11°C
16 %
Additional weather tips
Max wind speed: 14.0 km/h