Ethiopian runner Yomif Kejelcha breaks the men's half-marathon world record

Ethiopian runner Yomif Kejelcha made every second count as he broke the men's half-marathon record by just one second Sunday.

Ethiopian runner Yomif Kejelcha breaks the men's half-marathon world record
A men's distance runner in action, leading a line of other runners shown in the background.

Ethiopian runner Yomif Kejelcha made every second count as he broke the men's half-marathon record by just one second Sunday.