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The Return of the Kona Power Couple

Across 140.6 grueling miles, you might only catch a fleeting high-five or a quick glimpse on the Queen K - but for these married Ironman triathletes, knowing their partner is on the same world championship course changes everything.

Injury Prevention

Managing Fatigue/Burnout

How to Avoid Overtraining

Triathlon Travel/Logistics

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Ironman Races with the Highest and Lowest DNF Rates

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.

DNF: three letters nobody wants to see next to their name. It’s an acronym for “did not finish,” and for some athletes who have put in the time and effort to prepare for racing the 140.6 miles of an Ironman triathlon, it can be a real sting to not see the finish line. But as difficult as it might feel, it’s also more common than most assume. On average, 8% of the athletes on the start line at an Ironman will not finish the race.

In this article, we’ll take a look at data from the last 13 years of Ironman racing to find the highest and lowest DNF rates, as well as some of the factors that lead to these extremes. We’ll answer questions like “Who has a higher DNF rate in Ironman racing: men or women?” and “Does previous racing experience matter in making it to the finish line?”