On July 8, 2009, Reason burst onto the international scene when she posted a 30.23 world record time for the 50-metre breaststroke. Reason is the first Canadian female to break a world record in a long course pool since Allison Higson accomplished the feat in the 200-metre breaststroke in 1988. At the 2009 World Aquatics Championships, Reason finished seventh in the 50-metre breaststroke. Reason qualified for the 2012 Summer Olympics in London, with her teammate, Brittany MacLean. She also competed for the Canadian women's 4x200-metre freestyle relay team that finished fourth with a time of 7.50.65.
