What Are the Triathlon World Records
Here's a look at the fastest times ever recorded across the most frequently contested distances in our sport.
Ironman
The idea of a world record in triathlon is complicated. Unlike swimming or athletics, triathlon does not operate on standardized courses. Distances can vary slightly. Some races allow drafting on the bike while others do not. Elevation profiles, wind conditions, currents, and even road surfaces can dramatically influence finishing times.
Because of this variability, triathlon does not recognize official world records in the same way as other sports. What fans and athletes instead refer to are world best times or fastest performances achieved under specific conditions. Even then, comparisons require context.
With these caveats firmly in place, this article outlines the fastest performances ever recorded across the five most common triathlon race distances. Special exhibition events are addressed separately at the end.
Full Distance Triathlon: 3.8km swim, 180km bike, 42.2km run
On the men’s side, Magnus Ditlev currently holds the fastest time recorded on a standard full distance race course, having crossed the line at Challenge Roth in 2024 in 7:23:24. Among Ironman-branded events, Kristian Blummenfelt set a new benchmark at Ironman Cozumel in 2021, stopping the clock at 7:21:12, although an asterisk is often placed next to this due to the current-assisted swim.
On the women’s side, in 2024, Anne Haug came within minutes of the long-anticipated sub-eight-hour performance, finishing in 8:02:38 at Challenge Roth. As for Ironman-branded events, Laura Philipp set a new record just this past year in June 2025 at Ironman Hamburg, where she finished in 8:03:13.
Kona
At the Ironman World Championship in Kona, the record books have been rewritten repeatedly in recent years. Patrick Lange first broke eight hours on the island in 2018 with a 7:52:39 victory. In 2024, he pushed the boundary even further, becoming the first man to break 7:40 on that course with a time of 7:35:53.
The fastest marathon ever run in Kona belongs to Gustav Iden, who ran 2:36:15 during his 2022 world championship win.
On the women’s side, Lucy Charles-Barclay holds the record with a time of 8:24:31, set during her world championship win in 2023. The fastest women’s marathon in Kona is held by Kat Matthews at 2:47:23 – a run that was faster than 88% of the men’s field at the 2024 championship.
Half Distance Triathlon: 1.9km swim, 90km bike, 21.1km run
The fastest men’s half distance performance was set by Marten Van Riel at Ironman 70.3 Dubai in 2022 with a time of 3:26:06.
The women’s benchmark was lowered just recently in December 2025 when Georgia Taylor-Brown won Ironman 70.3 Bahrain in 3:51:19.
100km Distance: 2km swim, 80km bike, 18km run
The 100km format is now globally associated with the T100 Triathlon World Tour. The fastest men’s performance over the distance belongs to Hayden Wilde, who won in Wollongong in 2025 with a time of 3:06:07.
On the women’s side, also in Wollongong, Kate Waugh holds the fastest recorded time at 3:26:55.
Olympic or Standard Distance: 1.5km swim, 40km bike, 10km run
At the Olympic distance, comparisons are especially complex. Most elite races are draft-legal and bike course lengths have varied significantly between venues and Olympic Games.
The fastest Olympic Games performance on the men’s side belongs to Alex Yee, who won gold at the Paris 2024 Games in 1:43:33. On the women’s side, Cassandre Beaugrand claimed gold in Paris with a time of 1:54:55.
Outside the Games, the fastest recorded Olympic distance performances came at the 2024 WTCS Cagliari. Yee won in 1:39:44, while Beaugrand posted a remarkable 1:47:25.
Sprint Distance: 750m swim, 20km bike, 5km run
On the men’s side, the leading mark for sprint distance racing belongs to Hayden Wilde, who finished the WTCS Abu Dhabi race in 48:21.
The fastest women’s sprint performance was recorded by Lisa Tertsch at the same event, who won in 54:29.
Exhibition and Assisted Performances
Certain headline performances sit outside any official record conversation due to assisted conditions.
Notably, the Sub7 Sub8 Project was designed specifically to break the seven-hour barrier for men and eight-hour barrier for women. Kristian Blummenfelt recorded a 6:44:25 finish, while Kat Matthews finished with a 7:31:54 performance. These times are not recognized as world bests due to pacing support.
While triathlon may never have official world records, these performances across distances remain powerful reference points. They reflect the outer limits of human endurance and boundaries that continue to be pushed forward.