Alexis Hanquinquant was among home winners today at the International Triathlon Union (ITU) World Paratriathlon Series leg in Besançon in France.
The 32-year-old only started competing in the sport last year after having his leg amputated in 2013 following a work accident.
But, in just his third international event, he won the men's PT4 open classification at last year's World Championships in Dutch city Rotterdam.
He proved similarly dominant today in the PTS4 division to win in 1 hour 6min 16sec.
Britain's Steven Crowley finished second more than a minute behind in 1:08.50.
American Omar Bermejo took a distant bronze in 1:14.10.
A second home win came in the women's PTS5 event as Gwladys Lemoussu triumphed with ease in 1:18.50.
Rzaeva Amida took Russian silver in 1:26.15 with Svitlana Kirpichova of Ukraine a further 50 seconds back in third.
Ahmed Andaloussi led a French 1-2 in the men's PTHC class as he finished 68 seconds clear in 1:13.59.
Alexandre Paviza took silver with Britain's Bret Crossley crossing third in 1:16.51.
Stefan Loesler of Germany was among the day's other winners in the men's PTS2 event.
He triumphed in 1:16.30 to finish more than three minutes in front of Vasily Egorov of Russia, second in 1:19.32, and Maurits Morsink of The Netherlands, third in 1:22.03.