After six months of scientifically advanced training, three of the world’s most elite distance runners set out to break the two-hour marathon barrier.
➡ Subscribe: http://bit.ly/NatGeoSubscribe
➡ BREAKING2 AIRS WEDNESDAY SEPTEMBER 20 8/7c

Gladys Cherono ready for another sub 2:20 performance in Berlin - The women’s elite field for the BMW BERLIN-MARATHON on Sunday is ripe with talent, featuring five runners whose personal best is under 2:25. Gladys Cherono is the favourite among this quintet, having already won the race in 2015 with a world-class time of 2:19:25, going within 13 seconds of breaking the course record, set in 2005 by the Japanese Mizuki Noguchi (2:19:12). A record number of 43,852 runners from 137 countries have entered the 44th edition of the BMW BERLIN-MARATHON. The race, the biggest one-day sports event in Germany, is an IAAF Gold Label event and one of the Abbott World Marathon Majors series.

STAMFORD, Conn. - September 21, 2017 - NBC Sports Group presents coverage of three marathons in the next month - Berlin, Chicago, and Amsterdam - beginning this Sunday, Sept. 24 with live and encore coverage of the Berlin Marathon. Live coverage of the Berlin Marathon begins at 3 a.m. ET Sunday on NBCSN, with an encore presentation of the race Sunday at Noon ET on Olympic Channel: Home of Team USA.

For the first time the Mainova Frankfurt Marathon will have an Olympic champion in the elite field. Vivian Cheruiyot of Kenya, winner of the 5,000m gold in Rio last year, will run the second marathon of her road running career in Frankfurt on October 29. The organizers expect up to 15,000 entrants for the 36th edition of the Mainova Frankfurt Marathon which is an IAAF Gold Label race, the highest category in international road running. Online entry is still available at: www.frankfurt-marathon.com

fra

Title holder Mark Korir returns for Frankfurt Round Two - The Mainova Frankfurt Marathon on October 29 will offer round two of a contest which produced a thrilling encounter a year ago. The full set of podium finishers in the men’s race has been brought together by the organizers for a re-match. The title holder Mark Korir will race against his fellow Kenyans Martin Kosgey and Cybrian Kotut who finished second and third in 2016.