[3] During his childhood, Carson participated in a wide range of sporting activities, including athletics, field hockey and skiing.
After two seasons of downhill skiing at Ruapehu, he won the national championships in both the classic and freestyle forms for the M12 age grade.
Carson joined a harriers training group coached by Graham Tattersall at the end of 2002, and had his last season of field hockey in 2003.
In 2008, he joined Wellington Scottish Athletics Club and was selected for their men's A team to compete in the 2009 National Road Relay Championships being held on the Takahe to Akaroa course.
Carson was selected for the New Zealand team to the World Athletics Championships 2022 in Oregon, after achieving a 35-second personal best time of 13:17.27 in a 5000 m race in Spain in May.