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World Champion

Triathlon

Knibb Takes Fourth 70.3 World Title With Bike Record

Knibb claimed her fourth IRONMAN 70.3 world title in Nice, controlling the race from the front and setting a new bike course record along the way.

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Knibb Takes Fourth 70.3 World Title With Bike Record

Photo: Foto: Planet 3 / Wikimedia Commons · CC BY 2.0

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IRONMAN 70.3 World Championship

Nice · 12–13 Sept

All dates ›Live now

Taylor Knibb delivered one of the most commanding performances in championship history to reclaim the IRONMAN 70.3 World Championship in Nice. The American star crossed the line in a course-record time of 4:19:24, securing her fourth world title over this distance.

A decisive move on the Col de Vence

The race began under clear skies, with an air temperature of 19°C and a non-wetsuit swim in 25°C water. Knibb managed the slight chop well, emerging perfectly positioned among the leaders. Only 300 metres into the 1.9km swim, the field was already stringing out behind her.

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Once onto the bike, Knibb acted at once. The decisive moment unfolded on the long Col de Vence climb. She attacked with control, setting a new record of 29:48 for the ascent and gaining over four minutes on her nearest rivals before the summit.

Any hope that the technical descent might close the gap faded fast. After 60 kilometres, her lead stood at 6:12 over Alanis Siffert. By the dismount line, Marjolaine Pierré had moved into second but remained a distant 4:24 behind.

A margin built to absorb any charge

The cushion proved large enough to survive a fierce late charge from Julie Derron. The Swiss runner posted a blistering 1:13:04 half-marathon, a new run course record and one of the fastest splits in IRONMAN 70.3 history. With five kilometres left, the gap was shrinking slowly but still read 5:34.

Knibb never wavered. She kept her rhythm through the closing stretch on the Promenade des Anglais to win by more than five minutes. "I would say that today was probably one of my best performances," she told reporters afterwards.

After finishing second in 2025, Knibb reclaimed the crown with a win that added to her titles in the United States, Finland and Taupo. Next week, she races the UCI World Time Trial Championships — a fitting test for a performance built on raw power against the clock.

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The BEST 70.3 of ALL time?! Ironman 70.3 World Championship Highlights and Analysis

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