The 2026 Tour de France route features a demanding 185.2km stage 18 transition from Voiron to the Hautes-Alpes, culminating in a high-altitude finish at Orcières-Merlette. Riders will face five categorized climbs throughout the day, including a challenging final ascent that rises to 1,825 meters, testing both endurance and climbing technicality.
The Route Profile: From Voiron to the Hautes-Alpes
Stage 18 represents a significant test for the peloton as it shifts terrain toward the mountains. The route covers 185.2km, beginning with an early test at the Côte d’Engins.
As the race moves south-east, the intensity continues with the Côte de Monteynard, a category two climb measuring 9.7km at 5.0 per cent. A shorter category three ascent, the Côte des Terrasses, follows shortly after, providing little respite before the intermediate sprint in Corps at the 129km mark.
Climbing Data and Final Ascent Logistics
The final phase of the stage is defined by two distinct climbs that will likely dictate the race outcome. The Côte de Saint-Léger-les-Mélèzes, a category three ascent of 2.5km at 6.9 per cent, acts as a launchpad for the final effort.
Less than 4km later, riders begin the final ascent to Orcières-Merlette. This category one climb is 7.1km long with an average gradient of 6.7 per cent. According to route data, the climb is particularly steep near the base, with ramps reaching 8.2 per cent, before leveling out toward the 1,825m finish line.
Did you know?
High-altitude finishes above high elevations often impact rider performance due to lower oxygen levels, frequently leading to increased time gaps between general classification contenders.
Categorized Climbs Breakdown
The stage features five official categorized climbs, each presenting unique challenges for the peloton:
- Côte d’Engins (Cat 1): 11.4km at 5.4 per cent (km 36.7)
- Côte de Monteynard (Cat 2): 9.7km at 5.0 per cent (km 92.2)
- Côte des Terrasses (Cat 3): 3.4km at 6.6 per cent (km 112.8)
- Côte de Saint-Léger-les-Mélèzes (Cat 3): 2.5km at 6.9 per cent (km 166.2)
- Orcières-Merlette (Cat 1): 7.1km at 6.7 per cent (km 185.2)
Watch for teams to control the pace during the descent between the Côte de Monteynard and the intermediate sprint at Corps to ensure their leaders are positioned safely for the final two climbs.
Frequently Asked Questions
What is the total distance of Stage 18?
The stage covers 185.2km from Voiron to the finish at Orcières-Merlette.
How many categorized climbs are on the route?
There are five categorized climbs in total, ranging from category one to category three.
What is the final altitude of the stage?
The finish line at Orcières-Merlette is located at an altitude of 1,825 meters.
Which rider do you think has the best climbing profile for this stage? Share your predictions in the comments below or subscribe to our newsletter for daily Tour de France updates.
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