Tour de France 2026, Stage 18: Voiron → Orcières-Merlette
Mountain, 23 July 2026. 185.2 km with 3,944 m of climbing.
- Distance
- 185.2 km
- Climbing
- 3,944 m
- Highest point
- 1,825 m Orcières-Merlette
- Steepest km
- 9.6% at km 29
- Start
- Voiron 196 m
- Finish
- Orcières-Merlette 1,825 m
Climbs
| # | Climb | Category | Summit at | Length | Average | Summit |
|---|---|---|---|---|---|---|
| 1 | Côte d'Engins | Cat 1 | km 38.2 | 11.4 km | 5.4% | 854 m |
| 2 | Côte de Monteynard | Cat 2 | km 93.7 | 9.7 km | 5.0% | 844 m |
| 3 | Côte des Terrasses | Cat 3 | km 113.9 | 3.4 km | 6.6% | 836 m |
| 4 | Côte de Saint-Léger-les-Mélèzes | Cat 3 | km 166.9 | 2.5 km | 6.9% | 1,237 m |
| 5 | Orcières-Merlette | Cat 1 | km 185.7 | 7.1 km | 6.7% | 1,825 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 17:45 local time: 12 km/h from the north-west, gusting to 39 km/h on average. Dry.
- Average wind
- 12 km/h
- Direction
- North-west 322°
- Average gust
- 39 km/h
- Temperature
- 25°C 21 to 29°C
Historical weather for 23 July 2026, sampled at 47 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: 185.2 km, 3,944 m of climbing, 54.0 km of the route above 3% and 5.0 km above 8%.
The high point is 1,825 m at the finish (Orcières-Merlette). The steepest kilometre on the profile averages 9.6%, at km 29. The last 3 km to the line climb at 6.5% on average.
The 5 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 18 against a pro in ProPace. Every stage and every feature is free.
