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
110 metres hurdles until 1960. Don Styron held the world record in the event for over 50 years until Andy Turner broke the record in a specially arranged race at the Manchester City Games in 2010. Styron still holds the world record in the 220 yard low hurdles. The sprint hurdles are a very rhythmic race because both men and women take 3 steps (meaning 4 foot strikes) between each hurdle, no matter whether running 110/100 meters outdoors, or the shorter distances indoors (55 or 60 meters). In addition, the distance from the starting line to the first hurdle - while shorter for