He went on to win bronze medals at the 2019 World Athletics Championships and the 2020 Summer Olympics, which was the last time both of those competitions held the 50 km as an event.

He won a bronze medal with his team at the 2013 World University Games where two of the winning Russian race walkers, Denis Strelkov and Andrey Ruzavin have since been suspended for doping violations.

[5] His investigative work on illegal doping-related activities by Russian competitors has been quoted by the Associated Press and Inside the Games.

He was then disqualified for making contact with Dunfee, but Arai's medal was reinstated after a Japanese appeal led to overturning the disqualification.

His work with KidSport to raise money for charity was part of an attempt to give him "a different avenue to chase [his] competitive spirit," and he credited it with reinvigorating him heading into the 2019 season.

In the closing metres of the race, Dunfee surged into third place and won the bronze medal, becoming the third-ever Canadian racewalking Olympic medalist and the only one in the 50 km event.

He said it had "been a mental struggle for me, finding the motivation and mostly related to just coming to terms with the 50K not existing anymore, and that was so much of my identity.

[20] Later in the summer, Dunfee was named to the Canadian team for the 2022 Commonwealth Games in Birmingham, competing in the newly-added 10,000 m walk.

[23] At the 2023 World Athletics Championships, Dunfee competed in the 20 km walk on the first day of the event, finishing fourth with a Canadian record time 1:18:03.