Letesenbet Gidey and Joshua Cheptegei set new world records raising further questions about legitimacy of shoe technology

Two controversial world records were set on Wednesday over the course of a historic hour. Joshua Cheptegei broke the men’s 10,000m record, shaving six seconds off the previous time, while Letesenbet Gidey took four seconds off the women’s 5,000m time earlier at the event.

Both athletes made history while wearing Nike ZoomX Dragonfly spikes, a new version of the Nike Vaporfly shoe worn by a number of world record breaking athletes, including Mo Farah. 

At the event in Valencia, which had been branded as “World Record Day” in advance, Cheptegei broke a world record that had been set in 2005 by Kenenisa Bekele. The 24-year-old now possesses both the 10,000m and 5,000m world record, having broken the latter earlier this year.

Gidey’s performance in the women’s 5000m was just as astounding, recording a time of 14min 6.62sec, breaking Tirunesh Dibaba’s 2008 record.

The event was organised by Cheptegei’s NN Running

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