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Col du Barioz

3.8
5 reviews | Elevation profile | 5 photos
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Col du Barioz
Col du Barioz
Col du Barioz
Col du Barioz
Col du Barioz
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Elevation profile Col du Barioz

Statistics

Difficulty points 614
Length 13.6 km
Average gradient 6%
Steepest 100 metres 13.9%
Total ascent 818 m

Short recap

Beautiful scenery
Hidden gem
11 hairpin turns
#79 toughest climb of Isère
#63 most elevation gain of Isère
#51 longest climb of Isère
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Col du Barioz is a climb in the region Grenoble. It is 13.6 km long and bridges 818 m of vertical ascent with an average gradient of 6%, resulting in a difficulty score of 614. The top of the ascent is located at 1052 m above sea level. Climbfinder users shared 5 reviews of this climb and uploaded 5 photos.

Road name: Route des Thermes

This is an automatic translation, the original language is: French.
Nice climb, frequented in its first part (from Goncelin to Moretel-de-Mailles), much less so afterwards, at least until the junction with the D280 (the Balcon de Belledonne road) a few kilometres from the top of the pass. Very beautiful forest and country landscapes. The alternative, in fact the standard version, is to take the D280 from its beginning, at Saint-Pierre-d'Allevard. The road is then more frequented but just as pleasant, and overall a little less steep.... read more

Photos (5)

Col du Barioz
Col du Barioz
Col du Barioz
Col du Barioz
Col du Barioz
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Reviews (5)

5.0
4.0
3.0
2.0
1.0
Seb38
10 Mo 3.0
This is an automatic translation, the original language is: French. Show original

Ascent in 2 stages. First, a fairly busy road that climbs steadily on a good surface. After a short descent and ascent, you then branch off from the classic route onto a quiet little road. The surface isn't as good but it's okay, and the views are often very pretty, but there's very little shade. The slope is steeper but never too steep.

Ascension en 2 temps. Tout d'abord une route assez fréquentée qui monté régulièrement sur un bon revêtement. Après une courte redescente et remontée, on bifurque ensuite de la route classique pour prendre une petite route très calme. Le revêtement est moins bon mais correct, et la vue souvent très jolie, mais l'ombre se fait très rare. La pente est alors plus soutenue mais jamais trop forte.

Col du Barioz
Col du Barioz
Dashboard
sergenavetat
11 Mo 4.0
This is an automatic translation, the original language is: French. Show original

Done on 10 June 2025 but only from St Pierre D'allevard (not Goncelin), a less busy alternative to taking the D280 directly.
Pleasant ascent, shady, quiet but still quite steep.
The alternative is reached 3km from the summit (Rte des Balcons de Beldonne).

Fait le 10 juin 2025 mais seulement en partant de St Pierre D'allevard ( pas de Goncelin ), une alternative moins fréquentée que de prendre directement la D280.
Ascension agréable , ombragée, calme et malgré tout assez pentue.
on rejoint l'alternative à 3km du sommet. ( Rte des Balcons de Beldonne )

Col du Barioz
Dashboard
SimNono
1 y 4.0 00:50:00 (16.3 km/h)
This is an automatic translation, the original language is: French. Show original

A very nice pass once you've passed the road below, but I recommend descending via Saint Pierre, as the road is better there. Don't forget to check your mirrors for a great view of the Flumet lake and the Bauges massif!

Col très sympa une fois passé la route du bas, je conseille de descendre par Saint Pierre, la route y est meilleure. Regardez dans vos rétros pour une belle vue sur le lac du Flumet et le massif des bauges !

Col du Barioz
Dashboard
WouterDK
3 y 4.0
This is an automatic translation, the original language is: Dutch. Show original

The contrast between the first and second part of this climb could not be greater. From a busy track where you don't really seem to be climbing anywhere to a super nice narrow road that winds evenly uphill. Don't forget to look back for a nice view and at the top more of that!

Het contrast tussen het eerste en tweede deel van deze beklimming kan niet groter zijn. Van een drukke baan waarop je nergens echt lijkt te klimmen naar een super mooie smalle weg die gelijkmatig omhoog kronkelt. Vergeet niet achterom te kijken voor een mooi uitzicht en op de top meer van dat!

Col du Barioz
Col du Barioz
Dashboard
Franck_Pastor
4 y 4.0
This is an automatic translation, the original language is: French. Show original

Nice climb, frequented in its first part (from Goncelin to Moretel-de-Mailles), much less so afterwards, at least until the junction with the D280 (the Balcon de Belledonne road) a few kilometres from the top of the pass. Very beautiful forest and country landscapes. The alternative, in fact the standard version, is to take the D280 from its beginning, at Saint-Pierre-d'Allevard. The road is then more frequented but just as pleasant, and overall a little less steep.

Belle ascension, fréquentée dans sa première partie (de Goncelin à Moretel-de-Mailles), beaucoup moins ensuite, du moins jusqu'à la jonction avec la D280 (la route du Balcon de Belledonne) à quelques kilomètres du sommet du col. Très beaux paysages forestiers et champêtres. L'alternative, en fait la version standard, est de prendre la D280 dès son début, à Saint-Pierre-d'Allevard. La route est alors plus fréquentée mais tout aussi agréable, et globalement un peu moins pentue.

Dashboard

Climbing times

7 km/h 01:56:21
11 km/h 01:14:02
15 km/h 00:54:18
19 km/h 00:42:52

Road surface condition

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Traffic

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Frequently Asked Questions

Col du Barioz can be cycled from 3 sides. Col du Barioz from Goncelin is the most popular side, but the summit can also be reached via Col du Barioz from Goncelin via Saint-Pierre-d'Allevard & Col du Barioz from Tencin.

Col du Barioz 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 du Barioz is a first-category climb: long and tough. Do not underestimate this climb. Many famous Tour de France cols fall into this category. Prepare for a long, challenging ride. Only well-trained riders will reach the top smoothly. Make sure you have a road bike with climbing gears and enough training; otherwise, it will be a struggle.

Col du Barioz is 13.6 km long.

The average gradient of Col du Barioz is 6%.

Col du Barioz has a steepest segment with an average gradient of 13.9%.

The summit of Col du Barioz is at 1052 m.

At a slow pace of 7 km/h, it takes about 01:56:21 to climb Col du Barioz. At 11 km/h the time is 01:14:02, and at 15 km/h 00:54:18. For the fastest cyclists, 00:42:52 is an achievable time.

Col du Barioz is located in the region Isère in France.

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