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
Kempton Mares' Hurdle Kempton Mares' Hurdle The Kempton Mares' Hurdle, run under the sponsored title of the OLBG Mares' Hurdle, is a Listed National Hunt hurdle race in Great Britain which is open to mares aged four years or older. It is run at Kempton over a distance of about 3 miles and 110 yards (4,929 metres), and during its running there are twelve hurdles to be jumped. The race is scheduled to take place each year in November. First run in 2007, the Kempton Mares' Hurdle was won by Refinement who was trained by Jonjo O'Neill and ridden by AP McCoy. The