In what sport did Eugene receive his medal?

Eugene received his medal in swimming. This aligns with the themes explored in the film "GATTACA," where he is depicted as an elite swimmer, showcasing the genetic engineering trends prevalent in their society. His accomplishments in swimming are significant to his character's narrative, representing the heights he could achieve despite societal challenges related to his genetic background. Swimming embodies not just physical ability but also the emotional and psychological hurdles that Eugene must navigate as he strives for acceptance and success in a highly competitive world. This choice highlights the focus on athleticism in a context shaped by genetic predispositions, reinforcing the film's central themes of identity and potential.