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
Athletics at the 2004 Summer Olympics – Women's 100 metres hurdles 13.11 seconds or faster could be entered. Qualification rule: The first two finishers in each heat (Q) plus the next six fastest overall runners (q) advanced to the semifinals. Wind: −1.2 m/s Wind: −0.9 m/s Wind: 0.0 m/s Wind: −1.4 m/s Wind: −0.9 m/s Qualification rule: The first four finishers in each heat (Q) moved on to the final. Wind: +1.7 m/s Wind: +1.9 m/s Wind: +1.5 m/s Athletics at the 2004 Summer Olympics – Women's 100 metres hurdles The women's 100 metres hurdles at the 2004 Summer Olympics as part of the athletics program were held at the Athens