Malaysian triathlete Teh Kuok Yuen has taken the local triathlon scene by storm, etching his name in the record books with a phenomenal performance at Ironman Denmark on August 18th, 2024. Completing the grueling full-distance race (3.8km swim, 180km bike, 42.2km run) in a staggering 8 hours and 56 minutes, Teh shattered the national record by a significant 32 minutes.

This feat wasn’t a stroke of luck for Teh. He has been a dedicated athlete since entering the triathlon scene in 2007. For years, he relentlessly pursued his ambitious goal of finishing an Ironman under 9 hours – a project he affectionately named “#sub9by39.” His dedication led him to compete in prestigious races worldwide, including Challenge Roth, Ironman Western Australia, and Ironman New Zealand, continuously refining his skills and pushing his limits. Finally, at Ironman Denmark, his unwavering determination paid off, achieving the coveted sub-9-hour mark.
Teh’s accomplishment extends beyond the national record. His blistering time positioned him within striking distance of the professional ranks. He crossed the finish line just behind the fourth-placed female professional, a testament to his exceptional athletic prowess.

But Teh’s dominance doesn’t stop at full distances. He recently showcased his versatility at the Langkawi Ironman 70.3 event held on October 7th, 2024. There, he swept a remarkable four titles:
- Overall Age Group Winner
- Male 34-39 Age Group Winner
- Fastest Runner Overall
- Fastest Malaysian
While his finishing time of 4 hours and 32 minutes wasn’t his personal best (4 hours and 15 minutes), it showcased his continued brilliance. His performance rivaled the professional participants, further solidifying his position as a top contender in both full and half-distance triathlons.
Teh’s journey inspires aspiring triathletes across Malaysia. His relentless pursuit of self-improvement, unwavering dedication, and ability to excel in both full and half distances demonstrate the depth of his talent.

Here’s a closer look at Teh’s incredible journey:
- A Passion Ignited: Entering the triathlon scene in 2007, Teh embarked on a path of constant improvement, honing his skills and pushing his boundaries.
- Project #sub9by39: This ambitious project aimed at completing a full Ironman under 9 hours became a driving force, leading him to compete in renowned races worldwide.
- Ironman Denmark Triumph: His relentless pursuit culminated in a national record-breaking performance at Ironman Denmark, achieving the coveted sub-9-hour mark.
- Langkawi 70.3 Domination: Teh’s versatility shone through with four dominant titles at the Langkawi 70.3 event, further solidifying his position as a top contender.
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Looking ahead, Teh’s sights are set on even greater heights. With his unwavering determination and proven talent, there’s no doubt that he will continue to raise the bar for Malaysian triathlon and inspire generations to come.






