Fox has won fifteen medals at the ICF Canoe Slalom World Championships with ten golds (C1: 2013, 2014, 2015, 2018; K1: 2014, 2017, 2018; C1 team: 2013, 2015, 2019), three silvers (C1: 2019, K1: 2019, C1 team: 2017) and two bronzes (C1: 2010, K1 team: 2017). Her 7 gold medals in individual events make her the most successful paddler, male or female, in World Championship history. She also won a gold medal at the 2010 Summer Youth Olympics in the K1 event.