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Col des Mille Martyrs from Saint Béron

2
3.0
3 reviews | Elevation profile | 0 photos
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Elevation profile Col des Mille Martyrs from Saint Béron

Statistics

Difficulty points 483
Length 8.9 mi
Average gradient 4.9%
Steepest segment 10.7%
Total ascent 2297 ft

Short recap

Beautiful scenery
Hidden gem
16 hairpin turns
#88 most elevation gain of Isère
#46 longest climb of Isère
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Col des Mille Martyrs from Saint Béron is a climb in the region Isère. It is 8.9 mi long and bridges 2297 ft of vertical ascent with an average gradient of 4.9%, resulting in a difficulty score of 483. The top of the ascent is located at 2900 ft above sea level. Climbfinder users shared 3 reviews of this climb and uploaded 0 photos.

Road names: Route de Miribel, Route de Voissant, Route de Voissant, Route de Voissant & Route du Col

3.0 by eulmatt
This is an automatic translation, the original language is: French.
These are actually two climbs that you don't have to tackle one after the other. The first climb to the hamlet of La Montagne is difficult, with steep gradients and no chance to recover, despite the numerous switchbacks. You then reach a ridge road with a magnificent view of the Chartreuse Mountains; the road even descends back down to the intersection to pick up the final climb to Les Mille Martyrs, which is smooth and steady—provided you’ve saved some energy...... read more

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Reviews (3)

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eulmatt
eulmatt premium
1 w 3.0
This is an automatic translation, the original language is: French. Show original

These are actually two climbs that you don't have to tackle one after the other. The first climb to the hamlet of La Montagne is difficult, with steep gradients and no chance to recover, despite the numerous switchbacks. You then reach a ridge road with a magnificent view of the Chartreuse Mountains; the road even descends back down to the intersection to pick up the final climb to Les Mille Martyrs, which is smooth and steady—provided you’ve saved some energy...

Il s'agit en fait de deux montées que l'on n'est pas obligé d'enchaîner. La première bosse jusqu'au hameau de la Montagne est difficile, de gros pourcentages sans possibilité de récupérer, malgré les nombreux lacets. On arrive ensuite sur une route en crête avec une vue magnifique sur le massif de Chartreuse, la route redescend même jusqu'au croisement pour récupérer la montée finale des Mille Martyrs, qui est roulante et régulière, pour autant que vous ayez garder des forces...

Dashboard
sergenavetat
sergenavetat
4 Mo 3.0
This is an automatic translation, the original language is: French. Show original

A fine climb, even if on March 4 2026 it was cut short after the descent, as the Col des Milles Martyrs was part of a loop.
The ascent from Saint Béron is quite steep, and even though the average gradient isn't very high, there are some thigh-high sections.
Most of the route is in forest, with many switchbacks and little traffic on a road in good condition.

Belle ascension même si ce 4 mars 2026 elle fut rognée après la descente car le Col des Milles Martyrs faisait parti d'une boucle.
L'ascension depuis Saint Béron est quand même assez pentue et même si le profil la pente moyenne n'est pas très élevée, certains passages font bien mal aux cuisses.
En grande partie dans la forêt avec beaucoup de lacets et peu de circulation sur une route en bon état.

Dashboard
Jean-Baptiste
Jean-Baptiste
4 y 3.0
This is an automatic translation, the original language is: French. Show original

A beautiful, uncrowded and bucolic climb.
Done on the 3rd of March this year during a tour from Voiron.
Not too long a climb with some > sections; 8％. Ideal at the beginning of the season!

Belle montée peu fréquentée et bucolique.
Réalisée le 3 mars de cette année lors d’un circuit au départ de Voiron.
Montée pas trop longue avec quelques sections > 8％. Idéal en début de saison!

Dashboard

Climbing times

5 mph 01:47:59
7 mph 01:16:26
9 mph 00:59:34
12 mph 00:44:45

Road surface condition

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Traffic

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Frequently Asked Questions

You don't need special gearing for Col des Mille Martyrs from Saint Béron. 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.

Col des Mille Martyrs from Saint Béron is a serious climb and falls into the 2nd category. With a good basic fitness level, even without much cycling experience, you can complete this climb just fine. However, a bike with climbing gears is a must. Without experience or training, it will be really tough – but that’s part of the challenge!

Col des Mille Martyrs from Saint Béron is 8.9 mi long.

The average gradient of Col des Mille Martyrs from Saint Béron is 4.9%.

Col des Mille Martyrs from Saint Béron has a steepest segment with an average gradient of 10.7%.

The summit of Col des Mille Martyrs from Saint Béron is at 2900 ft.

At a slow pace of 5 mph, it takes about 01:47:59 to climb Col des Mille Martyrs from Saint Béron. At 7 mph the time is 01:16:26, and at 9 mph 00:59:34. For the fastest cyclists, 00:44:45 is an achievable time.

Col des Mille Martyrs from Saint Béron is located in the region Isère in France.

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