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Mont Piron

4
4.8
4 reviews | Elevation profile | 1 photo
Mont Piron
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Elevation profile Mont Piron

Statistics

Difficulty points 84
Length 0.3 mi
Average gradient 11.5%
Steepest segment 16.3%
Total ascent 197 ft

Short recap

Beautiful scenery
Hidden gem
7 hairpin turns
#18 toughest climb of Pays de la Loire
#93 most elevation gain of Pays de la Loire
#22 longest climb of Loire-Atlantique
#26 average steepest climb of Armorican Massif
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Mont Piron is a climb in the region Loire-Atlantique. It is 0.3 mi long and bridges 197 ft of vertical ascent with an average gradient of 11.5%, resulting in a difficulty score of 84. The top of the ascent is located at 226 ft above sea level. Climbfinder users shared 4 reviews of this climb and uploaded 1 photo.

Road names: Chemin du Rio & Route du Mont Piron

5.0 by Lyrenath
This is an automatic translation, the original language is: French.
The best and most difficult climb around Nantes. 350m at 20％ non stop. It's violent, it stings hard. The subtlety here is the mini yaw that you can actually cut through the inside of the bends. Indeed on the inside of the bends the climb is a constant 20％+ wall for 300m so expect to be rubbing the 30％. However if you go through the outside at every turn then the climb is 50m longer and you will be between 15/20％. It seems almost rolling, but watch out for the last ramp to call you ... read more

Photos (1)

Mont Piron
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Reviews (4)

5.0
4.0
3.0
2.0
1.0
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sirhill44
sirhill44 premium
10 Mo 5.0
This is an automatic translation, the original language is: French. Show original

Short but intense from the foot of the hill. The little Mur de Huy in the Loire really deserves its name! If there's only one to do in 44, it's this one!

Court mais intense dès le pied de la côte. Le p'tit Mur de Huy ligérien mérite vraiment son nom! S'il n'y en a qu'une à faire dans le 44, c'est celle-ci!

Dashboard
AlainL
AlainL premium
1 y 5.0
This is an automatic translation, the original language is: Dutch. Show original

Belle montee, helas a la limite de mes capacites [56ans et quand meme en bonne forme]. Malgre une pause a mi cote, j'ai mis 5minutes a m'en remettre arrive en haut. C'est court mais c'est intense. Les lacets sont superbes et permettent de reduire un peu la pente, mais il faut etre costaud.
Braquet 34x34

Belle montee, helas a la limite de mes capacites [56ans et quand meme en bonne forme]. Malgre une pause a mi cote, j'ai mis 5minutes a m'en remettre arrive en haut. C'est court mais c'est intense. Les lacets sont superbes et permettent de reduire un peu la pente, mais il faut etre costaud.
Braquet 34x34

Dashboard
Pandametal
Pandametal
2 y 4.0 00:02:50 (6.9 mph)

De loin la côte la plus dure de loire-atlantique, ces petits lacets sont totalement uniques dans la région.
Attention au braquet si vous voulez garder une cadence correcte car j'étais totalement à l'arrêt sur mon 36:25, ça monte autant que le mur de Saint Fiacre, mais c'est 3 fois plus long !

Dashboard
Lyrenath
Lyrenath
3 y 5.0 00:02:12 (8.8 mph)
This is an automatic translation, the original language is: French. Show original

The best and most difficult climb around Nantes. 350m at 20％ non stop. It's violent, it stings hard.
The subtlety here is the mini yaw that you can actually cut through the inside of the bends. Indeed on the inside of the bends the climb is a constant 20％+ wall for 300m so expect to be rubbing the 30％. However if you go through the outside at every turn then the climb is 50m longer and you will be between 15/20％. It seems almost rolling, but watch out for the last ramp to call you to order.
To be done in Nantes. If you continue for 1km before going back down to Oudon you will also have one of the most beautiful views of the Loire valley.

La meilleure et surtout la plus dure ascension autour de Nantes. 350m a 20％ non stop. C'est violent ça pique fort.
La subtilité ici c'est les mini lacet que vous pouvez en fait couper par l'intérieur des virage. En effet a l'intérieur des virage l'ascension est un mur a 20％+ constant pendant 300m attendez vous même a frolez les 30％. Cependant si vous passez par l'extérieur a chaque virage alors la l'ascension est 50m plus longue et vous serez entre 15/20％. Ça paraît presque roulant, mais attention a l'enflamade la dernière rampe vous rappellera a l'ordre.
A faire sur Nantes. En poursuivant votre route sur 1km avant de redescendre vers Oudon vous aurez aussi l'une des plus belle vue du coin sur la vallée de la Loire

Mont Piron
Dashboard

Climbing times

5 mph 00:03:54
7 mph 00:02:46
9 mph 00:02:09
12 mph 00:01:37

Road surface condition

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Traffic

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Frequently Asked Questions

You don't need special gearing for Mont Piron. The slope isn't long or steep enough to require much shifting down. You can conquer this climb on power alone. However, a compact gearing system with a smallest front chainring of 34 and largest rear sprocket of 28 or 30 is always nice if you enjoy cycling uphill. This helps maintain a smooth cadence.

Mont Piron is a 4th-category climb. A sprint to the top is usually not an option, and untrained riders will definitely feel it in their legs. For trained cyclists, it is a great training climb.

Mont Piron is 0.3 mi long.

The average gradient of Mont Piron is 11.5%.

Mont Piron has a steepest segment with an average gradient of 16.3%.

The summit of Mont Piron is at 226 ft.

At a slow pace of 5 mph, it takes about 00:03:54 to climb Mont Piron. At 7 mph the time is 00:02:46, and at 9 mph 00:02:09. For the fastest cyclists, 00:01:37 is an achievable time.

Mont Piron is located in the region Loire-Atlantique in France.

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