[5] She was selected to represent Australia at the 2012 Summer Olympics, where she finished 13th in the time trial and 39th in the road race.

Following her retirement, Marche became a food coach and nutritionist at UCI Women's WorldTeam Team SD Worx–Protime.

[1][9] She attended Nambour Christian College then was home schooled and obtained a Bachelor of Language from Western Sydney Institute.

Marche did not become a professional cyclist until she was twenty years old, taking inspiration from her father to get involved with the sport.

[1] She finished 1st in the individual time trial event at the 2012 Australian Road Championships in Learmonth, Australia.

[1] Marche was selected to represent Australia at the 2012 Summer Olympics in the road race and individual time trial.