Clark began synchronized swimming at age six. She won three silver medals in solo, duet and team at 1989 FINA World Junior Synchronised Swimming Championships As a member of Team Canada she would win silver in the team events at the 1991 World Aquatics Championships and 1994 World Aquatics Championships. She won a silver medal in the solo event at the 1995 Pan American Games. Her most notable achievement was winning a silver medal at the 1996 Summer Olympics in Atlanta with the Canadian team.