The 2025 IRONMAN Arizona was the final running of the race, which took place in Tempe and concluded two decades of hosting the event. Menno Koolhaas won the men's race with a sub-7:30 finish, securing a Kona slot, while Simone Dailey won the women's race after a powerful second-half marathon.
Menno Koolhaas (Netherlands) secured his first-ever full IRONMAN title. He led from the swim and bike, maintained his lead on the run, and finished with a time under 7 hours and 30 minutes. His victory secured a spot at the IRONMAN Kona World Championship. Runner-up Sam Long finished second, narrowly missing the win after a close battle with Koolhaas.
Simone Dailey (Great Britain) won the women's race after a strong comeback on the run. She started the run in second place but closed the gap, overtook the leaders, and pulled away for the victory with a finishing time of 8:37:17. This win was a career highlight, marking a successful final race of her career.
- Male Pro:
- 1 Menno Koolhaas NLD 7:28:52
- 2 Sam Long USA +8:29
- 3 Ben Kanute USA +10:04
- 4 Colin Szuch USA +12:28
- 5 Matt Hanson USA +15:36
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- Female Pro:
- 1 Simone Dailey GBR 8:37:17
- 2 Rachel Zilinskas USA +4:24
- 3 Elisabetta Curridori ITA +7:29
- 4 Alice Alberts USA +7:58
- 5 Danielle Fauteux CAN +19:01