Stage 18 heads to Orcières-Merlette with a short, sharp summit finish

Stage 18 of the Tour de France departs Voiron at 12.35pm CEST/1.35pm BST and concludes with a summit finish at Orcières-Merlette. The route’s brevity makes it uncertain whether a breakaway can survive to the line, setting up an intense day on the climbs.

The run to Orcières-Merlette is being billed as the race’s most prestigious mountain-stage finish. The route begins with a challenging opening 25km that includes the Cols Bayard and du Noyer, terrain that should be sufficient to allow a solid move to form. After those early efforts there are roughly 60km before the race reaches the Col d’Ornon, a point where the general classification contenders are likely to start shaping the day. The final ascent up to Orcières features 21 hairpins on the way to the line and will favor pure climbers.

Race organisers have kept the stage compact, which increases the chance that time gaps will open quickly and makes it difficult for a long-range escape to hold. The initial climbs — Bayard and du Noyer — arrive inside the first quarter of the stage and are expected to be the launchpad for any successful break. Teams with ambitions for the stage will need to be attentive from the opening kilometres.

Approximately 60km after those opening climbs the parcours reaches the Col d’Ornon, a likely platform for activity among the riders contesting the overall classification. Pogacar and Vingegaard are anticipated to move their teams into action around this sector, applying pressure as the race approaches the decisive finale. That phase may determine whether the peloton comes together or fragments before the final climb.

The closing ramp to Orcières-Merlette, with its 21 hairpins, presents a technical and selective finish that rewards pure climbing ability. Riders who excel on steep, twisting ascents will find the profile to their liking, while teams aiming to control the finish must time their efforts precisely. Netcompany’s Thymen Arensman, a double stage winner last year, is the sort of climber whose characteristics match the concluding slopes.

With the summit finish at Orcières-Merlette and the concentrated nature of the stage, the day could have meaningful consequences for the shaping of the race. Whether a successful escape survives or the favourites contest the finale, the parcours is set up to produce sharp racing and a high-stakes fight on the climbs.