Hurdling hurdle over various natural obstacles, such as logs, mounds of earth and small streams – this represents the sporting origin of the modern events. Horse racing has its own variant of hurdle racing, with similar principles. The standard sprint or short hurdle race is 110 meters for men and 100 meters for women. The standard number of steps to the first hurdle should be 8. The standard long hurdle race is 400 meters for both men and women. Each of these races is run over ten hurdles and they are all Olympic events. The men's 200 meters low hurdles event
2007 World Championships in Athletics – Women's 100 metres hurdles 2007 World Championships in Athletics – Women's 100 metres hurdles The 100 metres hurdles at the 2007 World Championships in Athletics was held at the Nagai Stadium in Osaka, Japan from August 27 to August 29. Bursting from the blocks in the final, Susanna Kallur took a narrow lead over the first hurdle slightly ahead of defending champion Michelle Perry. Over the next two hurdles, Kallur established a half metre gap on Perry, with returning silver medalist Delloreen Ennis-London almost matching Perry. After the fifth hurdle, Ennis-London started to spend more time in the air over the hurdles, losing ground.