Lowth studied business in Trinity College from 1996-2000. While in his final year in college, he quailifed for the Sydney 2000 Olympics on the 200m Butterfly. His time of 2.03.91 was disappointing as it left him 8th and last in his heat and failed to qualify him for the semi-finals. Former Irish international swimmer Nick O' Hare was critical of Lowth's swim. Lowth retired from swimming after the Olympics.