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Chalet de Charmant Som from Grenoble

3.3
4 reviews | Elevation profile | 2 photos
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Chalet de Charmant Som from Grenoble
Chalet de Charmant Som from Grenoble
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Elevation profile Chalet de Charmant Som from Grenoble

Statistics

Difficulty points 1202
Length 12.6 mi
Average gradient 7.1%
Steepest segment 13.7%
Total ascent 4708 ft

Short recap

9 hairpin turns
#34 toughest climb of France
#40 most elevation gain of France
#79 longest climb of Auvergne-Rhône-Alpes
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Chalet de Charmant Som from Grenoble is a climb in the region Grenoble. It is 12.6 mi long and bridges 4708 ft of vertical ascent with an average gradient of 7.1%, resulting in a difficulty score of 1202. The top of the ascent is located at 5482 ft above sea level. Climbfinder users shared 4 reviews of this climb and uploaded 2 photos.

Road names: Route de la Chartreuse, Route du Col de Porte, Route du Charmant Som & Route du Charmant Som

This is an automatic translation, the original language is: French.
At the Porte Pass, in front of the bar-restaurant, there is a rotating handle fountain, which was in use a fortnight ago when I passed. With the current drought this may not be the case, but there is still the possibility of refuelling at the bar itself.... read more

Photos (2)

Chalet de Charmant Som from Grenoble
Chalet de Charmant Som from Grenoble
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Reviews (4)

5.0
4.0
3.0
2.0
1.0
olivier_g
7 Mo 4.0
This is an automatic translation, the original language is: French. Show original

The Col de Porte is a fine climb in itself, with the highest percentages on the traverse from Corenc to the Col de Vence. After that, a final effort is required on a 5km road (potentially busy on fine summer days) to the Chalet du Charmant Som and its alpine pasture, which is in good condition but quite steep. Beautiful scenery at the top.
I've always found water at the Col de Porte, at the fountain at the end of the pass (on the right after the Domaine de Rozan).

Le col de Porte est déjà en soi une belle ascension, avec les plus forts pourcentage dans la traversée de Corenc jusqu'au col de Vence. Après ça il faut fournir un dernier effort en empruntant une route de 5km (potentiellement passante les beaux jours d'été) jusqu'au chalet du Charmant Som et son alpage, en bon état mais assez raide. Très beaux paysages une fois en haut.
J'ai toujours trouvé de l'eau au col de Porte, à la fontaine à l'arrivée au col (à droite après le domaine de Rozan)

Dashboard
Tyn
10 Mo 3.0
This is an automatic translation, the original language is: Dutch. Show original

Tough climb! It cost me more effort than anticipated. In the first kilometres (if you ride it according to this site, via Chantemerle), you get a stretch of over 20% (my Wahoo even gave 23.8%!).

At the foot of the climb, in Grenoble, fill your water bottles at 1 of the many public water taps (see photo). These are connected to the drinking water supply, so suitable for consumption.

The road surface in the last 5km is not great. Especially downhill, you notice that it does not bolt well, so gentle descents are advisable.

Stevige klim! Hij kostte me meer moeite dan vooraf gedacht. In de eerste kilometers (als je m rijdt conform deze site, via Chantemerle), dan krijg je een stuk van dik 20% voor de kiezen (mijn Wahoo gaf zelfs 23,8%!).

Vul aan de voet van de klim, in Grenoble, je bidons bij 1 van de vele openbare watertappunten (zie foto). Deze zijn aangesloten op de drinkwaterleiding, dus geschikt voor consumptie.

Het wegdek in de laatste 5km is niet geweldig. Met name berg af merk je dat het niet goed bolt, waardoor rustig dalen raadzaam is.

Dashboard
PopolIV
3 y 3.0
This is an automatic translation, the original language is: French. Show original

A long and more difficult climb than it seems, with steep sections, especially towards the end (when you are tired...).
Beautiful landscapes at the arrival on the plateau. I'm sure you'll be able to fill up your water bottles on the way up to Corenc or Le Sappey, but there's no water at the Col de Porte or at the Auberge de Charmant Som.

Montée longue et plus difficile qu'il n'y parait, avec des tronçons à forts pourcentages surtout vers la fin (quand on est fatigué ...).
Beaux paysages à l'arrivée sur le plateau. Bien remplir ses bidons dans la montée à Corenc ou au Sappey, pas d'eau au Col de Porte ou à l'Auberge de Charmant Som.

Dashboard
Franck_Pastor
3 y
This is an automatic translation, the original language is: French. Show original

At the Porte Pass, in front of the bar-restaurant, there is a rotating handle fountain, which was in use a fortnight ago when I passed. With the current drought this may not be the case, but there is still the possibility of refuelling at the bar itself.

Au col de Porte, devant le bar-restaurant, se trouve une fontaine à poignée rotative, qui était en service il y a deux semaines quand j'y suis passé (j'ai vu quelqu'un s'y servir alors que j'étais moi-même attablé au bar). Avec la sécheresse actuelle, cette fontaine est peut-être coupée mais il y a toujours possibilité de se ravitailler au bar lui-même.

Dashboard

Climbing times

5 mph 02:31:52
7 mph 01:47:31
9 mph 01:23:47
12 mph 01:02:57

Road surface condition

86% 0% 14%
Based on 7 votes
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Traffic

57% 43% 0%
Based on 7 votes
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Frequently Asked Questions

Chalet de Charmant Som can be cycled from 2 sides. Chalet de Charmant Som from Grenoble is the most popular side, but the summit can also be reached via Chalet de Charmant Som from Col-de-Porte.

Chalet de Charmant Som from Grenoble is a challenging ascent. For this type of climbing, we recommend mountain gearing, specifically a compact system. This means a small front chainring of 34 teeth, combined with a rear cassette where, depending on your level, strength, and experience, you choose a sprocket with 30, 32, or even 34 teeth. Remember that a smooth cadence is always more efficient!

Chalet de Charmant Som from Grenoble belongs to the Hors Catégorie, the top category. These are legendary and very tough climbs. A solid cycling condition, experience, and a good climbing gear ratio are essential to maintain a smooth cadence and complete the climb comfortably.

Chalet de Charmant Som from Grenoble is 12.6 mi long.

The average gradient of Chalet de Charmant Som from Grenoble is 7.1%.

Chalet de Charmant Som from Grenoble has a steepest segment with an average gradient of 13.7%.

The summit of Chalet de Charmant Som from Grenoble is at 5482 ft.

At a slow pace of 5 mph, it takes about 02:31:52 to climb Chalet de Charmant Som from Grenoble. At 7 mph the time is 01:47:31, and at 9 mph 01:23:47. For the fastest cyclists, 01:02:57 is an achievable time.

Chalet de Charmant Som from Grenoble is located in the region Isère in France.

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