300 metres hurdles to beginning of a standard 400 meter hurdle race, but its placement on the track is shifted 100 meters around the track so it finishes at the common finish line on the straightaway, where the longer race would reach the same point near the end of the second turn. There are 8 hurdles in the high school version, the last hurdle just 10 meters before the finish line. High schools began adopting the longer hurdle event state by state starting in the 1960s. At the time, most which school competition was using United States customary units, so the race was
2005 World Championships in Athletics – Women's 100 metres hurdles the lead while Hayes again was matching Perry stride for stride until Hayes hooked the ninth hurdle. She lost her balance between hurdles so much she never jumped the tenth hurdle, instead carrying it some seven metres down the track before pushing it away and striding over the finish line in last. With her last challenger suddenly out of the race, Perry ran in to the finish with a 1-metre lead over Ennis-London, who was less than a half metre ahead of her teammate Foster-Hylton across the line for silver. All times shown are in seconds.<br> Q denotes qualification by