The Belgian 4 × 400 m relay team, which included Julien Watrin, Robin Vanderbemden, 2018 junior world champion Jonathan Sacoor and younger brother Dylan, reached the final with a win in heat 2 in 3:02.44s, the 4th fastest qualifying time. In the final Julien Watrin and Robin Vanderbemden were replaced by the twin brothers Kevin and Jonathan. The Belgian team won gold in 2:59.47s.