Kobe Vleminckx gained his first international experience in 2017 when he finished eighth in the Belgian 4 x 100 meter relay in 40.82 s at the U20 European Championships in Grosseto . In 2019 he won the silver medal behind the British Shemar Boldizsar at the U23 European Championships in Gävle in 21.04 seconds and secured the bronze medal behind the teams from Germany and France in 39.77 seconds.
In 2019, Vleminckx became Belgian champion in the 100-meter run and in 2020 indoor champion over 60 meters.
Personal best
100 meters: 10.45 s (+1.9 m / s), June 10, 2019 in Tilburg
60 meters (hall): 6.71 s, February 16, 2020 in Gent
200 meters: 20.89 s (+1.3 m / s), May 19, 2019 in Lokeren