← Tour de France 2026 route
Tour de France 2026 · Stage 18 · Thursday, 23 July 2026 · MountainVoiron → Orcières-Merlette
Distance185.5km
Climbing4,000m
Descending2,367m
Climbs5Cat 1 finish
At 200 W≈ 7:55Sign in to use your FTP
Côte d'Engins (854 m)Cat 1
Côte de MonteynardCat 2
Côte des TerrassesCat 3
Côte de Saint-Léger-les-MélèzesCat 3
ORCIÈRES-MERLETTE (1 825 m)Cat 1
Climbs on stage 18
| Climb | Category | Top | Length | Gradient |
|---|---|---|---|---|
| Côte d'Engins (854 m) | 1 | km 36.7 | 11.6 km | 5.4% |
| Côte de Monteynard | 2 | km 92.4 | 9.8 km | 5.0% |
| Côte des Terrasses | 3 | km 113.1 | 3.4 km | 6.6% |
| Côte de Saint-Léger-les-Mélèzes | 3 | km 166.5 | 2.5 km | 6.9% |
| ORCIÈRES-MERLETTE (1 825 m) | 1 | Finish | 7.2 km | 6.7% |
Intermediate sprints
| CORPS | km 98.8 |
How it was measured
The course comes from ASO's own published geometry, the same data that draws the stage map on letour.fr, not from a route planner joining towns. VeloWorkout measures 185.5 km from Voiron to Orcières-Merlette against the 185.2 km the roadbook prints, and 4,000 m of climbing against a published 3,900 m. Elevation is sampled from the Terrarium elevation model and smoothed, so digital-model noise is not counted as climbing.
Waypoint positions agree with ASO's separately published climb positions to a median of 95 m (worst 162 m).