Tignes to Val d’Isère — Haute Route des Alpes via Col de l’Iseran High Crossing
Roof of the Alps on tarmac.
At 2,764 metres, the Col de l’Iseran sits above everything — no trees, no guardrails worth trusting, and views that’ll stop your engine mid-breath. The D902 climbs out of Val d’Isère in a series of tight switchbacks past the chapelle Notre-Dame de l’Iseran before dropping into Bonneval-sur-Arc, one of the best-preserved medieval villages in Savoie. The approach from Tignes through the Haute Tarentaise valley is deceptively smooth until you hit the upper snowfields and find out what your brakes are actually made of. This isn’t a technical 4×4 trail — it’s a serious high-altitude road that earns its reputation through sheer exposure, altitude, and the ever-present threat of afternoon storms rolling in off the Italian side.
Any reliable vehicle can make this run in summer, but the pass is typically closed October through June under deep snow. Best window is July to mid-September. No permit required. Fuel up in Bourg-Saint-Maurice or Val d’Isère — there’s nothing at the top. Cell service drops to nothing above the village of Bonneval. The payoff is riding the roof of the Alps on tarmac, with the Grand Paradiso massif bleeding into Italy to your south. Do it on a Tuesday. Avoid the Tour de France stage closures in July.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | Overland Route, Scenic Drive |
| Surface | Dirt, Gravel |
| Features | High Altitude, Historic, Remote, Scenic |
| Length (miles) | 38 mi / 61.2 km |
| Duration | 1 day |
| Max elevation (ft) | 9068 ft |
| Best season | July-September |
| Minimum vehicle | Any reliable vehicle |
| Nearest town | Val d'Isère, Savoie |
| Land manager | Direction Départementale des Territoires de la Savoie |
| Permit required | No |
| Cell service | Spotty |
| Water crossings | No |
| Dispersed camping | No |
| Official sources | Savoie Prefecture road info |
| Start coordinates | |
| End coordinates | |
| Copy both for Google Maps directionsClick to copy the directions URL · or open it directly in a new tab | |
| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Do I need a 4x4 or high clearance to drive the Col de l'Iseran route?
No. The D902 over Col de l'Iseran is fully paved, so any reliable vehicle in good mechanical condition can make it. That said, the grade is steep and sustained — make sure your brakes and cooling system aren't on their last legs before you climb to 2,764m.
When does the Col de l'Iseran road actually open and close each year?
Typically opens late June or early July and closes in October or November, depending on snowpack. July through September is the reliable window. The Savoie Prefecture (savoie.gouv.fr) posts real-time road closures — check it the morning you plan to drive, not the night before.
Are there any permits, fees, or special permissions required to drive this route?
No permits or fees required — it's a public departmental road. You're driving on French tarmac, not a managed off-road trail, so standard vehicle registration, insurance, and a valid driver's license are all you need.
What's the hardest section and what should I actually expect on the climb?
The switchbacks above Bonneval-sur-Arc on the southern approach are the steepest and most exposed, with sheer drop-offs and minimal guardrails. At the summit, weather can shift fast — snow in August isn't unheard of. Wind at the col can be violent enough to make opening a door feel like a fight.
Is there anywhere to get gas or food between Tignes and Val d'Isère, and what's cell service like up high?
Don't count on fuel between the two resort towns — top off in Tignes or Bourg-Saint-Maurice before you start. There's a café at the col summit in season, but treat it as a bonus, not a plan. Cell service drops out significantly above the treeline and is essentially gone at the col itself.
Trail track
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