
(Photo: Brad Kaminski/Triathlete)
Every action has an equal and opposite reaction—so with records falling all over the place at the front of the men’s race in Kona yesterday, it might be reasonable to expect to see a high DNF rate too. Once on the hallowed turf of the Big Island, many a pro athlete has let their dreams of glory cloud their judgment and physiology—and then had to walk off the Queen K after blowing up. Yet of the 51 pro men who toed the line in Saturday’s race, 44 finished, yielding a DNF rate of 14%. Unlike the Ironman World Championship in St. George, Utah, in May (where 100% of the women’s field finished) the DNF rate was far higher in the women’s pro field here in Kona, with almost one in three of the female athletes not completing the race (32 finishers from 45 on the final start list). From injuries to illness and overheating to underfueling, we take a look at the stories behind some of the biggest DNFs of these two championship races.
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The other male pros on Ironman’s DNF list were Matt Burton (AUS) and Pieter Heemeryck (BEL). Burton pulled out after Mile 77 on the bike, while Heemeryck ended his day after a 4:25 bike.

In the women’s race, there were 13 athletes who ended their days prematurely, perhaps the most notable of which was Sarah True. After a two-year hiatus from the sport (during which time she had a baby and foot surgery), the two-time Olympian made a formidable return to racing earlier this year (with wins at 70.3 Eagleman and Ironman Lake Placid). Having finished in fourth place in Kona on her debut in 2018, True knows what it takes to excel here—and also knows how important it is to put health above all else. In 2019, she had to pull out of three races due to a puzzling medical condition related to the heat. On her Instagram post-race she said she was “disappointed to be sidelined by illness at Kona” this year.
As a super swimmer and strong biker, Lauren Brandon is an athlete often seen at the front of the women’s field in the early stages of almost all Ironman races she enters, yet it seems Kona is a race she’s still figuring out. She said she suffered with “projectile vomiting” from Mile 70 of the bike, struggling to keep any fuel down after that point. On her Instagram she said: “Honestly, I don’t really know what to say. Four years of racing in Kona and I’ve walked away with two DNFs and two pretty terrible finishes. I was fit, healthy, and ready for a great day, but it didn’t happen.”
Jocelyn McCauley made an emphatic return to racing earlier this year (after having her second child) with an impressive victory at Ironman Texas. In The Woodlands she was riding exceptionally well—and has ridden away from Daniela Ryf in the past—and on Thursday the American seemed to be displaying her characteristically strong bike form (posting a 4:44 bike split), but she dropped from the race in the latter stages of the marathon. On her post-race Instagram she said: “I’m OK, but not OK,” adding that she planned to enjoy some “beach healing” for a couple of days.
German Daniela Bleymehl did not hide the disappointment of her DNF, attributing it to overheating later in the race. She posted the following on her social media: “A big emptiness and disappointment that I couldn’t show what I worked for. In the first half of the race I felt very good and right there where I wanted to be, but later due to overheating, I had to pull out. I tried everything to come back, but didn’t want to risk my health.”
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