The TOUR Tech-Briefing for the 19th stage

Robert Kühnen

 · 21.07.2023

The TOUR Tech-Briefing for the 19th stagePhoto: Getty Velo
From 1 to 23 July, the best cyclists in the world will compete in the Tour de France. Victory or defeat is not only decided by the legs, but also by the material. The TOUR Tech briefing for the 19th stage.

Tour de France 2023 - 19th stage: Morains-en-Montagne - Poligny | 172.8 kilometres

The elevation profile of the 19th stage of the Tour de France 2023Photo: A.S.O.The elevation profile of the 19th stage of the Tour de France 2023

Escape or sprint? Both seem possible on the 19th stage of the 2023 Tour de France. However, it is likely that a sprint will decide the stage win either way. After the last topographical obstacle, the Cote d'Ivory (2.4 kilometres, 5.9 per cent), 28 kilometres before the finish, the route is quite straightforward in the literal sense of the word. The last seven kilometres are straight ahead on a main road. If a rider is in the lead, he is a perfect chase victim. If a breakaway rider makes it through, there will probably be a group sprint. If the peloton makes it over the day's hills, the sprint group will be larger.

The finishing straight is slightly uphill. The difference in altitude is four metres over the last 1000 metres. Does this affect the sprint?

Number of the day: three bikes are tied in the sprint

In our sprint simulation over 150 metres final sprint, it's once again about hundredths of a second. If Jasper Philipsen is in the sprint, he has a good chance in our simulation, as his Canyon bike is one of the three fastest: Canyon Aeroad, Cervelo S5 and Cannondale System Six.

The top speed in our sprint simulation is 68 km/h - assuming that the riders are travelling at 62 km/h.

The (almost) complete field at a glance

Tour-de-France-2023-Tech-Briefing-19Photo: Robert Kühnen

*) The calculations are based on the bikes tested by TOUR in the laboratory and wind tunnel. The bikes at the Tour de France may differ in some details. Of course, we have not yet been able to analyse last-minute prototypes. Background to the simulation.

Our expert

                               Photo: Robert Kühnen

Robert Kühnen studied mechanical engineering, writes about technical and training topics for TOUR and develops test methods. Robert has been refining the simulation calculations for years and they are also used by professional teams.



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Robert wurde 1964 in Düsseldorf geboren und fuhr seine ersten Straßenrennen mit 17 Jahren. Zum Spitzenrennfahrer reichte es nicht, aber zu späten Nischenerfolgen. 2011 gelang es Robert, Zeitfahrweltmeister der Journalisten zu werden. Nach seinem Maschinenbaustudium in Essen führte ihn sein Weg bereits 1993 zur TOUR, wo er anfangs mit der Legende Hans Christian Smolik zusammenarbeitete. Heute ist Robert freiberuflich für TOUR und BIKE unterwegs, mit den Schwerpunktthemen Aerodynamik, Messtechnik und Entwicklung neuer Prüfmethoden. Motto: Geht nicht? Gibt‘s nicht. Robert berät auch die Radindustrie und Profiteams, coacht Athleten und kümmert sich um den Radsportnachwuchs. Als Radsportler mag es Robert kurz und schnell, auf schmalen wie auf breiten Reifen.

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