He won the bronze medal in the pole vault competition of the 2020 French championships, crossing 5.58m to finish behind brothers Renaud Lavillenie (gold) and Valentin Lavillenie (silver).[3]
On January 31, 2021, he broke his personal best by passing 5.72m. On this occasion he achieved the minimum for the European indoor championships.[4][5] A week later, he broke his record again by crossing 5.73 m in Rouen.[6] At the French indoor championships in Miramas on February 21, 2021, he won the silver medal with a jump to 5.72m, behind Valentin Lavillenie but in front of Renaud Lavillenie.[7] Later that month he cleared 5.80m for a new personal best.[8][9] In July 2021, he equalled this height to win the 2021 European Athletics U23 Championships in Tallinn. At the Tokyo Olympics Corment cleared 5.50m and finished twelfth in his qualifying group.[10]
At the 2023 European Athletics Indoor Championships Cormont cleared 5.75m to make the final.[11]
He was a finalist at the 2025 World Athletics Championships in Tokyo, Japan, in September 2025, placing eleventh overall.[12][13]
