[3] At the 2008 Australian Rowing Championships, she placed first in the under-19 women's single scull event and repeated this victory in the same category in 2009.

[7] In 2009, Hagan competed at the World Junior Rowing Championships in Brive-la-Gaillarde France, in a quad scull, finishing second in the 2000 metres race.

[2][9] In the women's eight over 2000m, she helped set a time of 6 minutes 12.36 seconds which qualified the crew for the London Olympics.

[15] Two months later that same four raced as Australia's senior women's coxless four at the 2013 World Rowing Championships in Chungju, Korea and took a bronze medal.

[15] Hagan was a member of the Australian eight who initially missed qualification for the 2016 Rio Olympics but received a late call up following the Russian drug scandal.

The Australian women's VIII had dispersed two months earlier after their failure to qualify but reconvened, travelled at the last minute to Rio and borrowed a shell.