The passes of the Glandon, Croix de Fer, Sabot, from Sarenne, fromOrnon and Lautaret are must-sees and it is in Oisans that you will find them.

Rooted in the legend of the Tour de France and offering vertical panoramas, they invite exploration. By car, motorbike or bicycle, set off to conquer these legendary passes for a journey rich in beauty and emotion.


Jules Arnaud
The Lautaret pass in summer

2 057 m

Col du Lautaret

At an altitude of 2 m, this legendary pass connects Isère to the Hautes-Alpes. Climbing this pass means facing a winding route where each turn brings us a little closer to the Écrins. Whether by car or bicycle, this climb reveals a grandiose and unspoiled beauty. Cyclists know that the Col du Lautaret is much more than just a mountain road: it is a symbol of resistance, endurance and an encounter with Alpine history.


2 064 m

Col de la Croix de Fer

Climb the Col de la Croix de Feris to tackle a legend. Faced with its steep slopes and its 2 meters of altitude, the asphalt can seem infinitely long. You will find comfort nestled in the beauty of the Grandes Rousses and Belledonne massifs. At the top, an iron cross stands, marking the history of this place, notably that of the Tour de France riders.

Cyrille Quintard
Climb to the col de la Croix de Fer By Bike

Cyrille Quintard
Bike ride up to the col du Glandon

1 924 m

Col du Glandon

Le Col du Glandon, it's a raw, uncompromising climb. Here, the profile is irregular, with slopes that can reach 10%, harsh, mineral panoramas, and that last kilometer is stunning amidst mountain pastures and waterfalls. A pass that is worth it, wild and powerful.


1 999 m

Col de Sarenne

Le Col de Sarenne, a discreet climb to Alpe d'Huez, proves to be a well-kept treasure for mountain and cycling enthusiasts. Less frequented than the legendary 21 bends, this winding, pastoral road, linking the Ferrand Valley to Alpe d'Huez, invites you on a wild, alpine and silent journey.

Laurent Salino
Le col de Sarenne By Bike

Laurent Salino
The Col d'Ornon

1m

Col d’Ornon

From Bourg-d'Oisans, the ascent of the Col d’Ornon winds through larch forests and alpine fields, climbing slowly but surely. As it goes, the valley stretches out like a footbridge between two giants. On one side, the imposing and secretive Taillefer massif, and on the other, the majesty of the Écrins, with its glacial peaks that seem to touch the sky. This crossing is a place where one feels both tiny and paradoxically in harmony with the grandeur that surrounds us.


2 100 m

Col du Sabot

More confidential than its famous neighbors, the Croix de Fer and Glandon, Col du Sabot Yet it reveals a spectacular view of the Alps, with a breathtaking perspective of Mont Blanc. Its isolated road, which winds through the Grandes Rousses, gives the climb a wild character. The climb, demanding with an average gradient of 7,5%, offers cyclists a challenge that matches the splendor of the landscapes.

Chadam Communication
Road to the col du Sabot

The Oisans Col Series

Every Tuesday morning in the summer, one of its 6 emblematic passes of Oisans is reserved in turn for cyclists. The roads are thus closed to motorized traffic, offering you privileged access, in complete peace of mind. The Oisans Col Series is a free adventure, without a stopwatch, registration or imposed schedule, which invites you to climb legendary climbs. Upon arrival, our volunteers will welcome you with a well-deserved refreshment. Join us to share our passion for cycling! 


Location of the passes


FAQ

of the Oisans passes

The legendary passes of Oisans are the Col de la Croix-de-Fer, the Col du Glandon, and the Col from Lautaret. These climbs have been made Popular through Tour de France.

The Col de la Croix-de-Fer, 29,1 km long with a positive elevation gain of 1547 m, has an average gradient of 5,2%. Although it is not the most difficult climb from Oisans, she is not to be underestimated and stay one something true challenge for cyclists seasoned. 

Physical preparation is essential for successfully climbing mountain passes of Mountain. It is recommended to train on long climbs, with moderate to steep gradients, and to add resistance exercises to improve endurance. .

The Pass of Sarenne is a route closed in winter due to snow, but it is perfectly passable during the summer season. It is a must do for its wild side and its spectacular panorama.

The descents of the passes can be particularly dangerous, with tight bends and sometimes slippery surfaces. It is crucial to control your brakes well and to remain vigilant towards vehicles, to the gravel and animals on the road .

Yes, there are several popular events taking place in Oisans each année, like the Marmot Granfondo, Alpe d'Huzes, Alpe d'Huez Triathlon and the Oisans Col Series which attract thousands of cyclists. The Tour de France men and woman also regularly passes through our mountains. 

Oisans is a vertical country. Therefore, climbing the passes is not suitable for beginners. However, csome, like that of Sarenne, can be adapted for intermediate level cyclists. Mbut climbs like this from Lautaret or Glandon are recommended for experienced cyclists. A good preparation is essentialle.

Summer, from June to September, is generally the best time to climb the passes. The weather is stable, the snow has melted making roads accessible , and the heat is bearable in Oisans. 

The average time to climb the Col du Lautaret from Le Bourg-d'Oisans depends on the cyclist's fitness level. AndIn general, the climb lasts between 1h30 and 2h30. This represents a height difference of 1 meters, with a distance of approximately 40 km. The course is relatively steep, with moderate but fairly regular slopes.  

Oisans is well served by roads and public transport, particularly from Grenoble. Trains and regional buses are convenient options, while driving offers more flexibility..


Need info?

Farm. Opens tomorrow at 09:00 p.m.
Quai Girard
38520 Le Bourg-d’Oisans
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