The Kenyan politician is the favorite to win north of the border.
The 17-year-old high school senior turned professional last year and is now coached by Alberto Salazar.
The race is chock full of former champions, Olympic champions and course record holders.
American Jason Hartmann duplicates his fourth-place result from 2012.
But he's not hanging up his racing shoes.
Wesley Korir and Sharon Cherop will defend their titles.
Ethiopians rule the the roads in the Windy City.
The reigning Boston champ is hoping to one up last year's second-place finish in the Windy City.
The heat made things even more stressful for organizers. It’s hard enough running the Boston Marathon on a day with perfect
In this special edition of RunCenter presented by adidas, Toni Reavis and Mario Fraioli analyze this year's unforgettable races at the