(REUTERS) - A smiling Eliud Kipchoge broke away from a pack of three and easily won the Chicago Marathon in a Kenyan sweep on Sunday.

Running in ideal conditions, the former world 5,000m track champion clocked 2hr 4min 11sec to claim his third marathon title in four races. He narrowly missed his personal best of 2:04:05.

Sammy Kitwara (2:04:28) and Dickson Chumba (2:04:32) claimed second and third.

Race co-favourite Kenenisa Bekele of Ethiopia fell of the pace after 25km and finished fourth in 2:05:51.

Defending champion Rita Jeptoo claimed the women's title in 2:24:35 to add to the Kenyan dominance.

Ethiopia's Mare Dibaba was a well-beaten second in 2:25:37, 20 seconds ahead of Kenyan Florence Kiplagat.

American Tatyana McFadden continued her superb women's wheelchair form, winning her third consecutive World Marathon Major of the year in 1:44:50.

Another Illinois athlete, Joshua George, won a sprint for the men's wheelchair race, clocking 1:32:12 for his fourth Chicago victory.