About Greg Welch
Born 1966. Greg Welch is an Australian triathlete.
Gregory John Welch (born in 1964 in Campsie, Sydney), known as Greg Welch, is an Australian triathlete. He is known for having won "The Grand Slam", which includes the ITU Triathlon World Championships, The Ironman World Championship (1994), the ITU Duathlon World Championships (1993) and the World Triathlon Long Distance Championships (1996). Greg was an ambassador to the UNHCR (United Nations High Commissioner for Refugees) in 2000.
Due to his being diagnosed with ventricular tachycardia, he has undergone nine open-heart surgeries from 2001 until 2003 and has retired from sports. He maintains contact with triathlon through his work as an advisor, coach and commentator with the World Triathlon Corporation.
He is married to fellow Ironman triathlete Sian Welch.
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Important facts
People in Greg Welch's life
Named in this biography and alive at the same time
Related people
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Contemporaries
People whose lives overlapped Greg Welch's
Frequently asked questions
Who is Greg Welch?
triathlete
When was Greg Welch born?
Greg Welch was born in 1966 in Sydney.
What is Greg Welch's occupation?
Greg Welch is a triathlete.
What nationality is Greg Welch?
Greg Welch is Australian.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Greg Welch. https://biography.guide/greg-welch/
MLA: "Greg Welch." Biography.guide, https://biography.guide/greg-welch/.
Chicago: "Greg Welch." Biography.guide. https://biography.guide/greg-welch/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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