Kenyan Moses Mosop won the 34th Chicago Marathon on Sunday, surging away from the field with 10 kms to go and setting a course record of two hours five minutes 37 seconds.
Kenya's Geoffrey Mutai won the Boston Marathon on Monday in an unofficial time of two hours three minutes and two seconds, the fastest time ever recorded over the distance.
Defending champion Geoffrey Mutai and Priscah Jeptoo won the men's and women's races at the New York City Marathon on Sunday for a Kenyan sweep in chilly, windy conditions through the city's five boroughs.
Ethiopian runners vying for a place in the summer Olympics dominated the Boston Marathon on Monday, taking the top three spots in the men's division for the first time, and the top two spots among the women.