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Col de Porte from Saint Martin le Vinoux via Col de Clémencières

HC
4.0
4 reviews | Elevation profile | 2 photos
Col de Porte from Saint Martin le Vinoux via Col de Clémencières
Col de Porte from Saint Martin le Vinoux via Col de Clémencières
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Elevation profile Col de Porte from Saint Martin le Vinoux via Col de Clémencières

Statistics

Difficulty points 902
Length 11 mi
Average gradient 6.4%
Steepest segment 14.6%
Total ascent 3704 ft

Short recap

Beautiful scenery
10 hairpin turns
#34 toughest climb of Isère
#95 most elevation gain of Auvergne-Rhône-Alpes
#23 longest climb of Isère
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Col de Porte from Saint Martin le Vinoux via Col de Clémencières is a climb in the region Grenoble. It is 11 mi long and bridges 3704 ft of vertical ascent with an average gradient of 6.4%, resulting in a difficulty score of 902. The top of the ascent is located at 4341 ft above sea level. Climbfinder users shared 4 reviews of this climb and uploaded 2 photos.

Road names: Place Charles de Gaulle, Route de Narbonne, Route de Clémencières, Route de la Frette, Route du Sappey, Route de Chartreuse & Route du Col de Porte

5.0 by cedricreynier
This is an automatic translation, the original language is: French.
One of my favourite climbs near Grenoble. 4 sections with a rather fizzy start in Narbonne, then we rest a bit after clemencieres and then we attack the serious stuff until sarcenas! A climb with beautiful views, nice hairpins that punctuate the climb. The arrival at Palaquit, facing the sun, is a real reward. Then the final section to reach the col de porte, a little more crowded but still very nice in the forest. A finish with a bar/resto for refreshments/sandwiches and food. From there, if yo... read more

Photos (2)

Col de Porte from Saint Martin le Vinoux via Col de Clémencières
Col de Porte from Saint Martin le Vinoux via Col de Clémencières
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Reviews (4)

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

It's a fine climb that starts steeply up to the hamlet of Narbonne, then the gradient drops a little to the Col de Clémencière (fountain at the crossroads with the road to Vence). After a short descent, the route continues on a minor road to Sarcenas and the Col de Palaquit before returning to the main road for 2km to the Col de Porte (fountain at the pass).

Belle montée qui commence fort jusqu'au hameau de Narbonne, puis les pourcentages diminuent un peu jusqu'au col de Clémencière (fontaine au carrefour avec la route menant à Vence). Après une courte descente on repart sur une petite route jusqu'à Sarcenas et le col de Palaquit avant de reprendre la route principale pour 2km jusqu'au col de Porte (fontaine au col).

Dashboard
FBe69
FBe69
2 y 4.0
This is an automatic translation, the original language is: French. Show original

A demanding climb. The climb up to Clémencières is tough from the outset, especially the first 3 kilometres, which ease off until the 1st pass. Lots of motorists in a hurry. A short descent before tackling the big climb via Sarcenas, fortunately with little traffic and magnificent scenery. Arrival at the Col de Palaquit means a return to the Col de Porte route, which is a lot smoother.

Une montée exigeante. On est dans le dur d'entrée de jeu pour la montée à Clémencières, particulièrement les 3 premiers kilomètres qui s'adoucissent jusqu'au 1er col. Pas mal d'automobilistes pressés. Courte descente avant d'attaquer le gros morceau de la montée par Sarcenas, heureusement avec peu de circulation et de magnifiques paysages. L'arrivée au col de Palaquit correspond au retour à la route du col de Porte, nettement plus roulant.

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

It is actually two climbs separated by a short descent. City atmosphere and traffic can be quite oppressive until the Clémencières pass, and then much calmer traffic until the Palaquit pass. There are still 2.5 km to go to the Porte pass on a very busy road. Once at the Col de Clémencières, I prefer to turn off towards the Col de Vence (a nice little country road) and continue along the classic route.

Il s'agit en fait de deux ascensions séparées par une courte descente. Ambiance citadine et trafic pouvant être assez oppressant jusqu'aux abords du col de Clémencières, et ensuite trafic nettement plus calme jusqu'au col de Palaquit. Il reste alors 2,5 km à parcourir jusqu'au col de Porte sur une route à nouveau très fréquentée. Pour ma part, une fois au col de Clémencières je préfère obliquer vers le col de Vence (belle petite route champêtre) et poursuivre par l'itinéraire classique.

Dashboard
cedricreynier
cedricreynier premium
3 y 5.0
This is an automatic translation, the original language is: French. Show original

One of my favourite climbs near Grenoble. 4 sections with a rather fizzy start in Narbonne, then we rest a bit after clemencieres and then we attack the serious stuff until sarcenas! A climb with beautiful views, nice hairpins that punctuate the climb. The arrival at Palaquit, facing the sun, is a real reward. Then the final section to reach the col de porte, a little more crowded but still very nice in the forest. A finish with a bar/resto for refreshments/sandwiches and food. From there, if you are hot, you can do the loop by returning to Grenoble via the Col du Coq.

Une de mes ascensions préférées près de Grenoble. 4 sections avec un départ assez pécho par narbonne, puis on se repose un peu après clemencieres et là on attaque le sérieux jusqu’à sarcenas ! Une montée avec de très belles vues, des épingles sympa qui rythment la montée. Une arrivée à palaquit orientée au soleil qui est une vraie récompense. Puis la section finale pour atteindre le col de porte, un peu plus fréquentée mais néanmoins très sympa dans la forêt. Une arrivée avec un bar resto pour se prendre un petit rafraîchissement / sandwich, et ravitailler. A partir de là si on est chaud, on peut faire la boucle en revenant à Grenoble par le col du coq.

Dashboard

Climbing times

5 mph 02:12:31
7 mph 01:33:49
9 mph 01:13:07
12 mph 00:54:55

Road surface condition

75% 25% 0%
Based on 8 votes
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Traffic

50% 38% 13%
Based on 8 votes
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Frequently Asked Questions

Col de Porte from Saint Martin le Vinoux via Col de Clémencières 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!

Col de Porte from Saint Martin le Vinoux via Col de Clémencières 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.

Col de Porte from Saint Martin le Vinoux via Col de Clémencières is 11 mi long.

The average gradient of Col de Porte from Saint Martin le Vinoux via Col de Clémencières is 6.4%.

Col de Porte from Saint Martin le Vinoux via Col de Clémencières has a steepest segment with an average gradient of 14.6%.

The summit of Col de Porte from Saint Martin le Vinoux via Col de Clémencières is at 4341 ft.

At a slow pace of 5 mph, it takes about 02:12:31 to climb Col de Porte from Saint Martin le Vinoux via Col de Clémencières. At 7 mph the time is 01:33:49, and at 9 mph 01:13:07. For the fastest cyclists, 00:54:55 is an achievable time.

Col de Porte from Saint Martin le Vinoux via Col de Clémencières is located in the region Isère in France.

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