The Col de l'Iseran by Motorcycle: The Complete Guide to the Highest Paved Mountain Pass in the Alps
If there is one mountain pass every motorcyclist should ride at least once in their lifetime, it's the Col de l'Iseran.
At 2,764 metres (9,068 ft) above sea level, it is the highest paved mountain pass in the Alps and the highest point of the legendary Route des Grandes Alpes. Connecting Val-d'Isère and Bonneval-sur-Arc, it crosses an extraordinary high-mountain landscape of glaciers, alpine meadows, and peaks rising above 3,000 metres.
The Iseran is more than just a challenge for Tour de France cyclists. It is also a true paradise for motorcyclists seeking spectacular scenery, flowing curves, and unforgettable Alpine roads.
At ALPEX Moto, it's one of our favourite passes to include in our motorcycle tours through the French, Swiss, and Italian Alps.
Quick Facts
Information Details
Altitude 2,764 m (9,068 ft)
Connects Val-d'Isère – Bonneval-sur-Arc
Region Savoie, France
Length Approximately 48 km (30 miles) from Bourg-Saint-Maurice
Road Surface Excellent
Difficulty ★★★☆☆
Opening Season Typically June to October, depending on snowfall: https://www.explore-savoie.com/velo/dates-douverture-des-cols/
Why Is the Col de l'Iseran So Legendary?
The Iseran is impressive long before you reach the summit.
As you climb higher, the forests gradually disappear, giving way to a dramatic mineral landscape where glaciers seem almost within reach.
At this altitude, the experience is truly unique.
The air becomes cooler, the views stretch endlessly across the surrounding peaks, and it quickly becomes clear why this pass is considered one of the most beautiful in the Alps.
Every corner makes you want to stop.
Every stop makes you want to reach for your camera.
The Ascent from Val-d'Isère
From Val-d'Isère, the climb is gradual and enjoyable.
The road is wide, beautifully maintained, and features long, sweeping curves that are a pleasure to ride.
As you gain altitude, the scenery becomes increasingly spectacular.
The alpine meadows gradually give way to rocky landscapes, mountain streams, and lingering snowfields that often remain well into early summer.
This side of the pass is perfect for soaking in the scenery without having to negotiate endless tight hairpin bends.
The Ascent from Bonneval-sur-Arc
The southern side offers a completely different atmosphere.
Bonneval-sur-Arc, officially listed among Les Plus Beaux Villages de France, is already worth a visit before beginning the climb.
The ascent is slightly steeper and rewards riders with magnificent panoramic views over the Maurienne Valley.
By the time you reach the summit, the breathtaking scenery more than justifies every kilometre of the climb.
The Summit
At 2,764 metres (9,068 ft), the Col de l'Iseran is the highest paved mountain pass in the Alps open to through traffic. It stands as the highest point of the famous Route des Grandes Alpes, offering breathtaking views across the surrounding mountain ranges.
The small Notre-Dame de Toute Prudence Chapel, built shortly after the road opened in 1937, adds a touch of history to this iconic location.
Even in the middle of summer, be sure to bring a warm jacket.
It's not uncommon for temperatures at the summit to be below 10°C (50°F) while the valleys below are enjoying temperatures above 30°C (86°F).
A Road Designed for Pure Riding Pleasure
The Iseran is one of those rare mountain passes where the enjoyment comes from much more than just the corners.
The pavement is excellent.
The curves flow naturally.
Visibility is generally outstanding.
The rhythm of the ride naturally follows the landscape.
This is a pass that invites you to slow down and savour every kilometre.
The Best Stops Along the Way
No ride across the Iseran is complete without stopping to admire the scenery.
Our favourite stops include:
The summit sign
The Notre-Dame de Toute Prudence Chapel
Scenic viewpoints overlooking Val-d'Isère
Glacier viewpoints
The panoramic overlooks above Bonneval-sur-Arc
When Is the Best Time to Ride?
June
The reopening of the pass is a magical time of year.
Towering walls of snow still line parts of the road, creating an unforgettable riding experience.
July
Generally the best riding conditions.
Long daylight hours and lush green mountain scenery make July an excellent choice.
August
Traffic is heavier during the peak holiday season.
Setting off early in the morning allows you to enjoy quieter roads.
September
Our favourite month.
Less traffic, beautiful golden light, and ideal riding temperatures make September hard to beat.
Tips Before You Ride
Before setting off, keep these recommendations in mind:
Always check that the pass is open.
Pack a warm layer.
Fill up your fuel tank before the climb.
Stay alert for cyclists and motorhomes.
Save the sightseeing for your stops, not while riding.
Can You Combine the Iseran with Other Passes?
Absolutely.
In fact, that's one of the greatest advantages of this region.
The Iseran fits perfectly into a motorcycle tour that also includes:
Little St. Bernard Pass
Great St. Bernard Pass
Mont Cenis Pass
Or part of the legendary Route des Grandes Alpes.
Discover the Col de l'Iseran with ALPEX Moto
The Col de l'Iseran is one of the signature routes featured in our Alpine motorcycle tours.
Thanks to our extensive knowledge of the mountain roads, we adapt every ride to the weather, pass openings, and the experience level of each group.
Our goal is simple: to help you discover the most beautiful roads in the Alps safely, while giving you plenty of time to enjoy every breathtaking viewpoint.
Frequently Asked Questions
Is the Col de l'Iseran difficult to ride?
No. Despite its impressive altitude, it remains accessible to most riders thanks to its wide road, excellent surface, and smooth, flowing curves.
When is the best time to ride?
Between June and September, when the pass is open and conditions are generally at their best. Opening dates vary depending on snowfall.
How much time should I allow?
The crossing itself takes about one hour without stops, but allowing two to three hours gives you plenty of time to enjoy the many viewpoints along the route.
Can you ride the Iseran, Little St. Bernard, and Great St. Bernard in a single day?
Yes. It's an outstanding route for riders who enjoy long days in the saddle.
Conclusion
The Col de l'Iseran is far more than just a mountain pass linking the Tarentaise and Maurienne valleys.
It is an iconic road, a spectacular high-alpine landscape, and an experience every motorcyclist should enjoy at least once.
With its breathtaking scenery, record-breaking altitude, and outstanding riding experience, it stands among the very best motorcycle destinations in the Alps.