Kat Matthews is a two-time Ironman Pro Series champion, three-time Ironman Vice World Champion, and European and National champion. She also holds the distinction of being the only athlete to become Ironman Vice World Champion on three separate courses: St. George (2022), Nice (2024), and Kona (2025).

The Army physiotherapist began exploring triathlon from the grassroots level, rising from sprint races to winning middle distance races outright as an amateur to earn her pro card. In her first pro race over the full distance she placed fourth at the 2019 Ironman Western Australia. It was the last time she finished off the podium in an Ironman outside of the World Championships in Kona.

Kat is also the first woman to finish a full distance triathlon in under eight hours, making history at the 2022 Pho3nix Sub8 Project, Powered by Zwift. She has a penchant for pushing her limits, taking on the challenge when former contender Lucy Charles-Barclay dropped out due to injury a scant two months before race day. Racing over the full distance with a team of 10 pacemakers, top-of-the-line equipment and the finesse and consistency in execution that is a hallmark of her racing style, she stopped the clock at 7:31:54, two minutes ahead of triathlon legend Nicola Spirig.