French Alps · Via Valloire
Conquer Col du Galibier: The Roof of the Alps
At 2,642 m the Galibier is one of the Tour's great high passes — thin air, a hard final kilometre, and a summit that feels like the roof of the Alps.
Quick facts
- Distance
- 18.1 km
- Average grade
- 6.9%
- Max grade
- 12%
- Elevation gain
- 1,245 m
- Summit
- 2,642 m
The experience
Starting from Valloire, the Galibier is a long alpine climb that builds rather than shocks. The lower slopes are steady; the scenery opens into high pasture and rock as you leave the valley floor behind.
Altitude is the hidden difficulty. Even when the average grade looks "only" 6.9%, breathing gets harder as you climb past 2,000 m. Riders who ignore that often unravel in the last kilometres.
The final approach to the col steepens and the landscape turns stark. Summit signs mark 2,642 m on the border of Savoie and Hautes-Alpes — a classic photo stop with peaks stacked behind the stone wall.
What goes up must come down. The descent toward Lautaret or back to Valloire is cold, fast, and exposed. Plan layers before you celebrate at the top.
Pro tips
- Respect altitude. Soft-pedal early; save matches for the final steep kilometres.
- The last km is the exam. Expect steeper pitches and thinner air — keep cadence, shorten your focus.
- Descent kit is not optional: windproof layer, gloves, and possibly knee warmers even in summer.
- Check the tunnel/road status in shoulder seasons; the pass can be closed or snowy outside peak summer.
- Hydrate more than you think you need — dry mountain air dehydrates quietly.
