At the Gold Coast 2018 Commonwealth Games, Katarina Roxon finished sixth in the S9 100-m freestyle and SB9 100-m breaststroke. Roxon also placed eighth in the SM10 200-m individual medley. It was her third career Commonwealth Games.
At the Rio 2016 Paralympic Games, Roxon brought home her first Paralympic medal, a gold in the 100-m breaststroke in Canadian record time. She was also on the 2008 and 2012 team,
Roxon reached new heights in 2015. She collected six medals including gold in the 100-m breaststroke at the Toronto 2015 Parapan American Games. At the 2015 IPC World Championships she struck bronze in Canadian record time in the 100-m breast.
At the 2013 IPC World Championships held in Montreal, Roxon helped Canada to the silver medal in the women’s 4x100-m freestyle relay. It was one of six events she competed in at the Montreal worlds. She also reached three other finals. Roxon competed at her second Paralympic Games in London in 2012. She was among Canada’s busiest athletes, competing in eight events in the S8 category.
At age 15, she was the youngest Canadian swimmer on the Beijing 2008 Paralympic team. She has competed at four IPC Worlds, including in 2006 at age 13.