In the women's race, Florence Kiplagat ran under 2:20.
The former New York City Marathon champion hasn't raced in nearly a year.
She received it thanks to her efforts promoting the development of women in sports.
Paula Radcliffe is balancing her motherly duties with Olympic-caliber training.
He's won the race a total of three times.
Her comeback is further delayed.
Geoffrey Mutai's world-leading time at Boston won't count as a world record.
The great Ethiopian marathoner admits Boston is no cakewalk.
Only Radcliffe has run faster than Keitany in London.
He caught the lead marathoners who had a 2-minute head start.