Norway’s Karsten Warholm ran 46.70 seconds to set a new men’s 400m hurdles world record in front of his home crowd at the Diamond League meeting in Oslo. Warholm beat 1992 Olympic champion Kevin Young’s mark of 46.78secs, the longest-standing record in men’s track. The two-time world champion, 25, finished ahead of Alison dos Santos (47.38) and Yasmani Copello (48.86). In the women’s 5,000m, Britain’s Eilish McColgan broke Paula Radcliffe’s 17-year-old British record.
