Elevation profile of Tour de France 2026 stage 20, Le Bourg d'Oisans to Alpe d'Huez: 170.9 km with 5,624 m of climbing, highest point 2,642 m.
Route profile from ProPace's route data. Darker shading is steeper road; the numbers mark the categorised climbs listed below.
Distance
170.9 km
Climbing
5,624 m
Highest point
2,642 m Col du Galibier
Steepest km
12.9% at km 145
Start
Le Bourg d'Oisans 712 m
Finish
Alpe d'Huez 1,840 m

Climbs

#ClimbCategorySummit atLengthAverageSummit
1Col de la Croix de FerHCkm 34.024.0 km5.2%2,067 m
2Col du TélégrapheCat 1km 89.711.9 km7.1%1,566 m
3Col du GalibierHCkm 111.317.7 km6.9%2,642 m
4Col de SarenneHCkm 157.412.8 km7.3%1,999 m

Length and average gradient from the official roadbook; summit distance measured on the route.

The wind on the day

Averaged along the route between 12:30 and 17:15 local time: 8 km/h from the south-west, gusting to 39 km/h on average. Rain recorded along most of the route.

Average wind
8 km/h
Direction
South-west 243°
Average gust
39 km/h
Temperature
23°C 14 to 30°C

Historical weather for 25 July 2026, sampled at 42 points along the route and pre-computed before the app shipped. It is not a live forecast and the app makes no weather calls. Weather data by Open-Meteo.com (CC BY 4.0).

Riding it

A mountain stage: 170.9 km, 5,624 m of climbing, 69.7 km of the route above 3% and 25.5 km above 8%.

The high point is 2,642 m at km 111 (Col du Galibier). The steepest kilometre on the profile averages 12.9%, at km 145. It finishes uphill, the final 3 km averaging 5.8%.

The 4 categorised climbs listed above are placed on the profile by their summit distance on the route, with the length and average gradient from the official roadbook.

In ProPace the stage runs with this wind along the route, resolved into headwind, tailwind and crosswind at each point, and the app puts your own numbers on it against the pro reference. The reference profile and how the simulation works are set out in How much slower than a pro are you?

Ride Tour de France 2026 stage 20 against a pro in ProPace. Every stage and every feature is free.

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