Justine Dufour-Lapointe started her young career during the 2010–11 FIS Freestyle Skiing World Cup.

[4] She won her first major medal at the 2013 FIS Freestyle Skiing World Championships, where she placed third, winning the bronze behind the dominant Hannah Kearney, who had won the gold medal.

Dufour-Lapointe had fallen during her qualification but managed to place a good second run to qualify for the final.

"[5] At the 2014 Sochi Olympics, Dufour-Lapointe competed in Moguls along with her sisters Chloé and Maxime.

[7] Thanks to the win, this earned the sisters' and Canada's first gold and silver medals of the 2014 Sochi Olympics.

Dufour-Lapointe said of the event with her sister and her excitement that "Holding Chloe's hand meant that I wasn't alone.

"[1] The 2015 FIS World Championships were another event for Dufour-Lapointe to build her elite status.

Dufour-Lapointe went into the 2018 Winter Olympics as an underdog and having trouble finding the podium with her usual regularity.