Dunfield competed in four skating with partners Mary Kenner, Peter Firstbrook, and Vera Smith.

As a single skater, Dunfield won the Canadian national junior title in 1951 and bronze on the senior level in 1952 and 1953.

From the early 1960s, Dunfield coached with his wife in New York City at the Sky Rink.

[2] When the rink closed around 1983, they moved to the Gloucester Skating Club in Orleans, Ontario.

Dunfield was married to American skater and coach Sonya Klopfer, with whom he had two sons.