IRONMAN 70.3 Chattanooga 2026 Results: MacLean Edges Klau in Thriller
Jeremy MacLean delivered a dominant swim performance and held on through an electric men’s race at IRONMAN 70.3 Chattanooga on 17 May 2026, edging Ari Klau by just 10 seconds in one of the most dramatic finishes of the North American season. In the women’s race, Grace Alexander defended her Chattanooga title in style, posting the day’s fastest bike split on her way to a 4:16:42 victory.
Men’s Race: MacLean Survives Klau’s Charge
Jeremy MacLean set the tone early with a 27:11 swim split — the fastest in the men’s field — and used that lead as a buffer for the relentless pressure that followed. Ari Klau, known for his run strength, pushed hard on the 56-mile bike leg and entered T2 within striking distance. The final run came down to seconds: MacLean crossed the line in 3:45:37, with Klau just 10 seconds back at 3:45:47. Matt Hanson and Sam Long completed the top four in what was a high-calibre North American pro field.
Women’s Race: Alexander Defends with Authority
Grace Alexander made defending a Chattanooga title look straightforward, powering to the day’s fastest female bike split of 2:18:51 and building a lead that Paula Findlay couldn’t fully close on the run. Alexander finished in 4:16:42 with Findlay a solid second at 4:18:47. It was a commanding performance from Alexander, who demonstrated the kind of complete-race execution that wins 70.3 titles.
Key Takeaways
- MacLean’s swim was decisive: A 27:11 lead off the water proved impossible to overcome, even with Klau’s charging run.
- Ten-second margin: One of the tightest men’s finishes of the 2026 North American season — 3:45:37 vs 3:45:47.
- Alexander’s bike dominance: Fastest female bike split confirmed why she is a Chattanooga specialist.
- Sam Long in the mix: The four-man top group signals a competitive North American 70.3 circuit in 2026.
IRONMAN 70.3 Chattanooga continues to attract a strong North American pro field. With the 70.3 World Championship qualification window open, expect results like this to shape how athletes approach the remainder of their 2026 calendars.
