- Kristian Blummenfelt
- 7:21:12 hour(s):minute(s):second(s)
- Mexico (Cozumel)
The fastest time to complete an IRONMAN® triathlon (male) is 7 hours 21 minutes 12 seconds, achieved by Kristian Blummenfelt (Norway) at 2021 IRONMAN Cozumel in Cozumel, Mexico, on 21 November 2021.
Blummenfelt destroyed the world-best time for an IRONMAN triathlon in Cozumel – in his first race over the distance. Strong currents during the swim propelled the Olympic triathlon champion to a split of 39:41, which he followed up with a 4:02:35 bike ride and a 2:35:24 run.