Ethiopia’s Yomif Kejelcha broke the world half marathon record* at the Medio Maratón de Valencia Trinidad Alfonso Zurich on Sunday (27), clocking 57:30 at the World Athletics Gold Label road race.In his sixth appearance over the distance, the 27-year-old world indoor mile record holder set off behind the pacemakers before taking command of the race just before the third kilometre. From then on, he started running at 2:43/km pace in pursuit of the world record.The two-time world indoor champion went through 5km in 13:38, 10km in 27:12 and 15km in 40:56. It was at that point when he made a break from Kenyans Daniel Mateiko and Isaia Kipkoech Lasoi to secure the win, taking one second off the world record set by Jacob Kiplimo in Lisbon three years ago.The world record looked to be under threat for most of the women’s race with Agnes Ngetich passing through 10km in 29:18. But the Kenyan’s pace dropped slightly in the second half and she eventually crossed the line in 1:03:03 – the second-fastest performance in history – on what was her debut at the distance.Subject to the usual ratification procedure