The Running Shoes of the Fastest Pro Men at the 2025 IRONMAN World Championship

September 22, 2025

Six of our top fifteen pro men run splits from this year’s IRONMAN World Championships came from athletes who did not wind up earning prize money. In fact, two of our top run splits were put up by athletes well outside the top 25.

ASICS had the most athletes out of the top run splits, with five athletes in their line-up of various MetaSpeed shoes. Adidas was a surprise second place, with four athletes showing up in the top time splits. Perhaps unsurprising given their recent heavy focus on triathlon, On was well represented, with three athletes wearing their footwear. Saucony, HOKA, and Puma each had a sole athlete in the top 15.

It is perhaps a giant shock that Nike is nowhere to be found here. After having great presence in the top run splits at both Nice and Kona in 2024, there were zero top 15 splits (or top 15 results, for that matter) for the Swoosh. Slowswitch