McManiman made her debut for Canada at the inaugural Winter Youth Olympics in 2012. McManiman won the gold medal in the slopestyle event.[3] MacManiman would compete in a few World Cup events between 2012 and 2015, topped off by competing at the 2015 World Championships.[1] In January 2016, McManiman had a serious crash in training and after recovery switched her focus to competing in the snowboard cross discipline.[1]
Snowboard cross
At the 2019 Winter Universiade in Krasnoyarsk, McManiman won bronze in the women's snowboard cross event.[4]