400 metres hurdles to 400 metres, or one lap of the stadium, and the number of hurdles was reduced to ten. The official height of the hurdles was set to 91.4 cm (3 feet) for men and 76.20 cm (2 ft, 6 inches) for women. The hurdles were now placed on the course with a run-up to the first hurdle of 45 metres, a distance between the hurdles of 35 metres each, and a home stretch from the last hurdle to the finish line of 40 metres. The first documented 400 m hurdles race for women took place in 1971. The International Association
2015 World Championships in Athletics – Men's 400 metres hurdles 2015 World Championships in Athletics – Men's 400 metres hurdles The men's 400 metres hurdles at the 2015 World Championships in Athletics was held at the Beijing National Stadium on 22, 23 and 25 August. While Kenya has dominated the longest hurdle race, the 3000 metres steeplechase since the 1968 Olympics, and John Akii-Bua from neighboring Uganda hinted at what might be the capability of East African athletes in this event, Kenya has never had a medalist at 400 hurdles, until this year. Nicholas Bett was the fastest qualifier in the heats. His teammate Boniface Tumuti was the second fastest