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
Sprint hurdles at the Olympics Olympic records are 12.91 seconds for the men's 110 m hurdles, set by Liu Xiang in 2004, and 12.35 seconds for the women's 100 m hurdles, set by Sally Pearson in 2012. The fastest time recorded at the Olympics for the men's 200 m hurdles was 24.6 seconds by 1904 winner Harry Hillman. Maureen Caird won the last women's Olympic 80 m hurdles race in 1968 with a record of 10.39 seconds. The men's 110 m hurdles world record has been broken at the Olympics on six occasions: 1908, 1928, 1932, 1936, 1972 and 2004. The women's 100 m hurdles