Mark de Jonge captured bronze in 2012 at his first Olympic Games in the inaugural K-1 200m race. The native of Halifax, Nova Scotia qualified an Olympic berth for Canada with his sixth place finish at the 2011 World Championships in Szeged, Hungary. Also in 2011 he won his first World Cup medal, a bronze, and he added another bronze at the London 2012 Olympic test event at Eton Dorney.
De Jonge competed at the 2009 World Championships in Nova Scotia and had a top-5 finish in the K-1 4x200m relay, a top-6 finish in the K-4 200m event and a top-15 finish in the K-1 200m event.
In 2007, he captured silver in the K-4 1000m event at the Pan American Games in Rio De Janeiro, Brazil. De Jonge has been kayaking since 1997.