Marcus Lawler won bronze in the 200 metres at the 2019 World University Games.
He ran the 200 metres at the Tokyo 2020 Olympic Games, finishing sixth in his heat in a season's best of 20.73 seconds.
Lawler comes from a sprinting family: his mother Patricia is a former international sprinter who has coached him for much of his career. He was schoolboy champion several times and finished fourth at the 2013 European Junior Championships, competing alongside Phil Healy and Sarah Lavin. He is from Carlow.