Check out these great shots from the 16th annual Rock 'n' Roll Marathon & Half Marathon!
The 25-year-old Kenyan runs the fastest half-marathon ever on American soil.
The American running legend will run Sunday's half-marathon in southern California.
Both the men's and women's races were dominated by Kenyans.
He wants to continue the Kenyan dominance in New York.
The New York City Marathon should decide the women's race.
The Olympic gold medalist on the track is now successful on the roads.
The Ethiopian gold medalist is heading to the roads.
The Olympic gold medalist will compete against her Ethiopian teammates.
Will an American runner reach the podium in London?