The Ironman Versailles 2026 results are in, and the inaugural edition has crowned its champion. On Sunday, October 11, 2026, in Versailles (78), the Frenchman Mathieu Gallet crossed the 113-kilometre course in 3h58'54, the only athlete to finish under four hours.
After a disrupted summer, the race finally went ahead on the château grounds. Around 1,500 triathletes lined up at the start, according to the specialized site Référence Trail.
Thus it is Mathieu Gallet, a member of the Douai Triathlon Club, who signs the first name on the Versailles honours list. He edges Yann Guyot by 2 minutes and 37 seconds, a margin that stayed tight after nearly four hours of effort.
A detail that comes with a touch of spice: according to the published times, Yann Guyot clocks a half-marathon ever so slightly faster than the winner. But the lead Mathieu Gallet built on the water and on the bike is enough to keep him in front all the way to Avenue de Paris.
Here's the top of the Ironman Versailles standings, with the final times recorded at the finish.
Behind the front pair, the fight for third place lasts under a minute, with three men going at it. A true race within the race, like a final sprint by cyclists in a triathlon.
Among the women, the live standings place Hella Haak (Germany) at the top in 4h33'33, ahead of the British Ida Burrows and the German Sophia Lange.
Lisa Jaillet is the highest-placed French competitor on the leaderboard, sitting in fourth place. These rankings and times are the ones posted at the finish by UltimateLIVE; they may still be adjusted before final validation.
The initial date was set for July 12, 2026. But the Yvelines prefecture requested a postponement just days before the start, due to the heatwave and the risk of overloading emergency services, as reported by Tri247. A bloom of cyanobacteria in the Pièce d'Eau des Suisses also threatened the swimming leg.
The organizer, the city, and the château have since secured an autumn slot. It’s a choice that appears to have paid off for the athletes: swimming in October beats pedaling in 40°C heat. According to Infos Yvelines, a multi-year agreement already envisions a 2027 edition.
The 70.3 format, half the distance of a traditional Ironman, comprises 1.9 km of swimming, 90 km of cycling, and a half marathon 21.1 km. The swim, initially planned in the Swiss Water Basin, ultimately took place in the Grand Canal of the Versailles estate, lending added prestige to this exceptional edition.
The cycling leg then sped toward the Chevreuse Valley, featuring two well-known benchmarks for Île-de-France cyclists: the Vacheresse climb and the 17 Tournants, passing by the Abbey of Vaux de Cernay. To finish, three 7-km walking loops, including a passage through the Potager du Roi, before the finish on Avenue de Paris, in line with the château.
Men’s and women’s classifications, along with participant tracking, are available on UltimateLIVE. The event organizer also maintains an IRONMAN results page. Each participant can also view their split times on the tracking platform RTRT. For details on this weekend’s road closures, our article on the circulation restrictions around Ironman Versailles 2026 provides an update.
This Sunday proved to be a distinctly sporty affair in Île-de-France, with runners lining up for the Paris 20K at the foot of the Eiffel Tower. And to keep the momentum of outdoor outings in the 78 going, our weekly selection of weekend activities in the Yvelines is updated every week.
