Gurung competed only in the men's 50 m freestyle at the 2000 Summer Olympics in Sydney. He received a ticket from FINA, under a Universality program, in an entry time of 27.28. He challenged six other swimmers in heat one, including 16-year-olds Wael Ghassan of Qatar and Hassan Mubah of the Maldives. Diving in with a 0.87-second deficit, Gurung scorched the field to register a second-seeded time and a personal best of 27.02. Gurung failed to advance into the semifinals, as he placed sixty-ninth overall out of 80 swimmers in the prelims.