McCormack finished 5th in 1989 and 7th in 1990 at the Australian Schools cross country titles but was pushed by his parents to focus on education over sport.

After graduating in the top 10% of the State, McCormack decided to further his studies completing a Bachelor of Economics degree at the University of New South Wales.

His premature celebrations down the finishing chute cost him the silver medal in the race, allowing him to be passed by two competitors.

He was picked for the Australian Team to represent at the Commonwealth Games in England in 2002, and won 3 Triathlete of the Year awards for his racing during this period.

After Normann Stadler completed a new course record bike time of 4:18 McCormack started the run some 10 minutes down.

McCormack again won the 2010 Ironman World Championship, defeating two-time defending champion, Craig Alexander.

[3] Despite this, McCormack was still thought to be a potential selection to the Olympic team when taking into account the performance of other fellow Australian triathletes.

[16] After 20 years, McCormack retired from professional triathlon to focus on his growing business interests in the sports consulting, media and high performance development space.

His transition into the business world started with spearheading the Thanyapura Sports and Wellness Resort development in Phuket, Thailand which left lasting positive political and social effects on the city.

[18][17] Super League Triathlon (SLT) was founded by McCormack and entrepreneurs Michael Dhulst and Leonid Boguslavsky.

Over the course of a qualifying and championship series, the top male and female triathletes from around the world race for the crown as Super League Triathlon champion.

[19] McCormack is a board member of the Pho3nix Foundation,[20] a non-profit social welfare organisation founded by Polish businessman and philanthropist Sebastian Kulczyk that aims to create a global system of professional support for youths talented at sports.

As the managing director for Bahrain Endurance 13 and sports advisor, McCormack acts as primary spokesperson for the endurance team and strategic advisor for optimizing the team's performances globally and attaining the marketing exposure that the Kingdom of Bahrain is focused on achieving.