Geoffrey Kamworor sets new half marathon world record

[Millard]

IAAF: Kamworor breaks world half marathon record in Copenhagen with 58:01| News | iaaf.org

Geoffrey Kamworor took 17 seconds off the world record at the Copenhagen Half Marathon on Sunday (15), winning the IAAF Gold Label road race in 58:01*.

The 26-year-old Kenyan returned to the Danish capital, the scene of his first of three world half-marathon titles, in a bid to improve on the world record of 58:18 set in Valencia last year by Abraham Kiptum.

 

[Millard]

The Science Behind Nike's New, Even Faster Marathon Shoe

Since their debut in 2017, Vaporflys have become a race-day favorite among professional athletes and hobby joggers alike. (Observe the sea of red Vaporflys among the elite field at the 2018 London Marathon.) They have so far avoided being banned from competitive events by the International Association of Athletics Federations, the governing body of the running world. But the Next% could change that: Nike claims that the shoe saves runners even more energy than its predecessors. This week, I confirmed those claims with the researchers who performed external validation of Nike's internal tests: The shoes, they say, provided a significant advantage over the 4%s in a controlled study.

The new Vaporfly's superior energy savings could translate to even faster times. But how much of an advantage will the Next%s actually provide—and will it be enough to compel the IAAF to act?