Amandine Brossier gained her first international experience in 2017 at the U23 European Championships in Bydgoszcz , Poland , where she made it to the semifinals in the 200-meter run , where she was eliminated with 23.91 seconds. In addition, she won the silver medal in the French 4 x 100 meter relay in 44.06 s. In the following year she won the 4 x 400 meter relay in 3: 29.76 min, the silver medal behind Italy at the Mediterranean Games in Tarragona . In 2018 she reached the semi-finals over 400 meters at the European Indoor Championships in Glasgow , where she was eliminated with 54.56 seconds. In addition, she finished fourth in the French relay with a time of 3: 32.12 minutes. At the World Relays in Yokohama she was eighth in 3: 36.28 minutes and in July she won the bronze medal over 400 meters behind the Mexican Paola Morán and Leni Shida from Uganda at the Student World Games in Naples in 51.77 seconds .
In 2018, Brossier became French indoor champion in the 200-meter run.
Personal bests
200 meters: 23.33 s (+2.0 m / s), July 7, 2018 in Albi
200 meters (hall): 23.44 s, February 18, 2018 in Liévin