Wollongong triathlon coach and competitor Nathan Miller recently won the world champion title in the 25-29 age group at the sprint world championship event in Auckland.
"I knew that I was a chance to podium in my age group, but even at the end of the race didn't know that I had won," Miller said.
The sprint distance involves a 750 metre swim, 20 kilometre cycle and 5 kilometre run.
Miller, who is also head coach of Project M Training, completed the impressive distance in 1 hour 6 minutes, more than a minute ahead of his nearest competitor.
Miller, who travelled to Budapest earlier this year to take part in a world championship event, is used to competing at a high level.
He will now train for events such as Cairns Half Ironman and overseas races in Europe while continuing his coaching commitments.
Other Illawarra athletes to compete in Auckland were Ashley Thomas (5th in 18-24 age group), Mitch Lewis (9th in 17-19 age group), Mark Duncan and Matt Lewis.
All athletes did well and finished in the top 20 in their age groups.