Career
He is the course record holder for the Ironman World Championship. Early career
In December 1993, Alexander raced in his first triathlon at Kurnell in Southern Sydney. Alexander split his time between Olympic Distance racing and Half Iron distance from 2002 to 2005, winning a total of 20 races in his first 4 years as a professional triathlete.
Ironman racing
In 2007 he made the jump to Ironman racing with his debut at Ironman Hawaii.
On 23 March 2014, following his race at the Ironman Triathlon Asia Pacific Championships, Alexander officially announced his retirement from Ironman distance racing. Coaching career
On 7 February 2014, Alexander announced his entry into triathlon coaching, and his coaching business, Sansego.
Along with three other triathlon coaches he hosted a three day advanced triathlon course in Wollongong. Alexander attended Ashfield Boys High School and went on to study Anatomy and Physiology at university.