Joyce Chepkirui victorious in women's race.
American Jason Hartmann duplicates his fourth-place result from 2012.
Peter Kirui prevailed in the men's division.
Aggressive start helps Kenyan to course record.
Two of the fastest 10K road racers of all time are toeing the line.
The two fastest men in history will go head-to-head in New York on May 14.
Komon, Kogo will race on the roads in Berlin on Sunday.
Kenyan runs 26:44 to take 17 seconds off Kogo's mark.
Great Britain’s first sub-13:00 5,000-meter man takes us through his recent record-breaking performance. Interview by: Duncan Larkin