Larsen is the elder brother of Canada lock Josh Larsen.[2]
Rugby career
Larsen, a blindside flanker, played his early senior rugby for Auckland's Marist North Harbour club and became a New Zealand Universities representative player during his time at Massey University. From 2014 to 2016, Larsen had two seasons in Italy, with Lyons Piacenza and Petrarca Padova. He began playing Major League Rugby in 2019.[3]
International rugby
Larsen was capped for Canada in two 2023 Test matches against Tonga in Nukuʻalofa.[4]