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.

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.


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.


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.

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
What are the most famous passes in Oisans?
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.
How difficult is the climb to the Col de la Croix-de-Fer?
The Col de la Croix-de-Fer, 29,1 km long with a positive elevation gain of 1 547 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.
How to train for climbing Alpine passes?
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. .
Le Col de Sarenne Is it accessible all year round?
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.
What precautions should be taken when descending passes?
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 .
Are there any cycling events in Oisans?
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.
Are the Oisans passes suitable for beginners?
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.
What is the best time of year to climb the Oisans passes?
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.
What is the average time it takes to climb the Col du Lautaret from Le Bourg-d'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 1 h 30 and 2 h 30. 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.
How to get to Oisans to climb a pass?
Oisans is well served by roads and public transport, particularly from Grenoble. Trains and regional buses are convenient options, while driving offers more flexibility..