Kenyan runners dominated the Boston Marathon Monday, taking the top three spots in both the men's and women's races.

Wesley Korir triumphed in the men's race with a time of two hours, 12 minutes and 40 seconds, about a half-minute ahead of his countrymen Levy Matebo (2:13:06) and Bernard Kipyego (2:13:13). American Jason Hartmann came in fourth (2:14:31).

Sharon Cherop won a tight race on the women's side, finishing just two seconds ahead of runner-up Jemima Jelagat Sumgong. Cherop's winning time was two hours, 31 minutes and 50 seconds.

Fellow Kenyan Georgina Rono came in third (2:33:09). Firehiwot Dado of Ethiopia was fourth (2:34:56).

The Boston Marathon is the world's oldest annual marathon, and considered one of the major events in the running world.

Monday's race was run in unusually hot weather, making the finishing times some of the slowest in recent Boston Marathon history.