Today came the news that Brigid Kosgei had smashed the women’s marathon record that had stood for 16 years by a massive 81 seconds, with a new time of 2:14:04. What I found interesting in the report was this little item.
Some will also point out that Kosgei was wearing the Nike Next% training shoes, which have been estimated to give between 60-90 seconds of performance benefit over other shoes.