DNF

Do certain factors lead to a higher DNF rate at Ironman Races? Data guru Russell Cox analyzes athlete performance over the last 13 years in search of trends.

10 of the 54 pro women who started did not finish at last weekend’s 2025 Ironman World Championship in Kona. From headaches to stomach issues to sheer suffering in the heat, find out what happened to athletes like Chelsea Sodaro, Taylor Knibb, Lucy Charles-Barclay, and more.

Almost 25% of the men’s pro field didn’t finish the race at the 2025 Ironman World Championship. Here’s what happened to the likes of Magnus Ditlev, Daniel Baekkegard, Antonio Benito Lopez, Kieran Lindars, and more.

Walking away from a triathlon goal isn’t a failure, says coach Julie Dunkle. In fact, it’s a sign of a smart athlete.

12 of the 54 pro men who started did not finish at last weekend's 2024 Ironman World Championship Kona. From jellyfish to bike crashes, find out what happened to DNF athletes like Gustav Iden, Trevor Foley, and more.

There was some fast and furious racing on the Big Island, but not everyone made it to the finish chute. What happened to those who didn’t?