Both men’s and women’s marathon world records broken in past 24 hours

CHICAGO, ILLINOIS - OCTOBER 13: Brigid Kosgei of Kenya breaks the world record to win the 2019 Bank of America Chicago Marathon on October 13, 2019 in Chicago, Illinois. (Photo by Quinn Harris/Getty Images) Kenya's Eliud Kipchoge celebrates after busting the mythical two-hour barrier for the marathon on October 12 2019 in Vienna. - Kenya's Eliud Kipchoge on Saturday made history, busting the mythical two-hour barrier for the marathon on a specially prepared course in a huge Vienna park. With an unofficial time of 1hr 59min 40.2sec, the Olympic champion became the first ever to run a marathon in under two hours in the Prater park with the course readied to make it as even as possible. (Photo by ALEX HALADA / AFP) (Photo by ALEX HALADA/AFP via Getty Images)

CHICAGO — Both the men’s and women’s marathon world records were broken in the past 24 hours.

Brigid Kosgei of Kenya won the Chicago Marathon on Sunday in 2 hours, 14 minutes, 4 seconds to break the world record in the event.

The 25-year-old Kosgei bested the previous mark of 2:15:25 set by Paula Radcliffe in London 16 years ago. She won in Chicago last year in 2:18:35.

Kosgei’s run came little more than 24 hours after fellow Kenyan Eliud Kipchoge became the first man to run 26.2 miles in less than two hours.

The 34-year-old Kenyan completed the 42.195 kilometers (26.2 miles) in 1 hour, 59 minutes, 40.2 seconds at the INEOS 1:59 Challenge, an event set up for the attempt.

But this time there’s an asterisk: Olympic champion Kipchoge performed his feat under conditions so tightly controlled to maximize his success that it won’t appear in the record books.  With all variables tailored to his advantage, it was still the full marathon distance but it was no regular marathon race, which means his jaw-dropping finishing time will not be ratified by IAAF.

Unlike Kipchoge’s performance, however, Kosgei’s mark was set in an official race on a record-eligible course.

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