Justine was born in Normandy and traveled in the south of France and spent a few years in Tahiti. After the baccalaureat, she leaves to study Staps in Nice. After having her staps license in EM, she decides to put the emphasis on triathlon. Indeed, after shining during the young years, there followed a long hollow period. Now more motivated than ever, she would like to return to the France team for her final year.