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
1987 World Championships in Athletics – Men's 400 metres hurdles were the usual suspects of 1980's long hurdling. From the gun, Moses took the race out hard, making up the stagger to catch Schmid just past the fourth hurdle. Harris was also out fast but not as aggressively as Moses, taking hurdles one stride behind. Running his famous 13 steps, Moses pulled away through the final turn as Schmid accelerated to keep pace. He had a two metre lead coming of the 9th hurdle with Schmid passing Harris as Harris took the hurdle leaning back. Moses maintained his lead over the final hurdle as Harris fought back to a slight