Galloway was born in Canberra and commenced his rowing career at Telopea Park School and in his senior years at Narrabundah College.

[3] In 1984 he teamed again with his Narrabundah partner Paul Thompson to win an u/23 coxless pair title at the Australian Championships.

[6] Galloway's first senior representative selection was to the 1986 World Rowing Championships in Nottingham, England.

[7] That same year at the 1986 Commonwealth Games in Edinburgh, in that same crew Galloway won gold in the Australian men's VIII and also rowed to a bronze medal in a coxed four.

[9] Galloway's final Australian representative appearance was in the men's eight selected for the 1988 Summer Olympics.