Sarah (Fanny) Durack battled local swimming authorities to become the first Australian woman to compete at the Olympic Games. In 1912, at Stockholm, she won the gold medal in the 100 meters freestyle event, beating her compatriot and training partner, Wilhelmina (Mina) Wylie. She went on to break numerous world records until she retired from competitive swimming in 1921.

Via womenaustralia.info