Col de l'Iseran

The cols here are all world famous, thanks to the rather well known road race, the Tour de France.

Col de l'Iseran 

This col is one of the most famous and challenging road bike climbs in the French Alps. At 2,764m, it is the highest paved mountain pass in the Alps, making it a legendary route for cyclists. It often features as part of a stage in the Tour de France, adding to its prestige among road cycling enthusiasts.

Can be tackled from down in Bourg-Saint-Maurice or from Val d'Isère

From Bourg-Saint-Maurice

Distance: ~48km
Elevation gain: ~1,955m
Average gradient: 4.1% (but steeper in sections)

Key features:

• a long but steady climb with breathtaking views
• passes through Val d’Isère, a famous ski resort (see more below)
• some tunnels and avalanche protection structures
• the final stretch is exposed and can be affected by wind

From Val d'Isère

Distance: ~17km
Elevation gain: ~895m
Average gradient: ~5.3%

Key features:

• starts around 1,850m the route climbs through wide, open landscapes to the summit
• less steep climb, but still exposed with altitude

Tip: ride early in the day to avoid summer storms and bring layers - it's often cold and windy at the top, even in summer