|ITU World Championships|
|ITU World Cup|
Originally a speedskater from Wollongong he rose to the elite ranks of the emerging sport of triathlon in the early 1990s whilst living on Queensland's Gold Coast.
- 3 time (consecutive) winner of the Hervey Bay Triathlon.
- He won the silver medal at the 2002 Commonwealth Games in Manchester.
- Stewart competed at the first Olympic triathlon at the 2000 Summer Olympics. He took sixth place with a total time of 1:49:14.52.
- Currently CEO of Triathlon Australia
Stewart can be found in the Guinness Book of World Records for the fastest triathlon time in the world.