400 metres hurdles 400 metres hurdles The 400 metres hurdles is a track and field hurdling event. The event has been on the Olympic athletics programme since 1900 for men and since 1984 for women. On a standard outdoor track, 400 metres is the length of the inside lane, once around the stadium. Runners stay in their lanes the entire way after starting out of the blocks and must clear ten hurdles that are evenly spaced around the track. The hurdles are positioned and weighted so that they fall forward if bumped into with sufficient force, to prevent injury to the runners. Although
100 metres at the Olympics during her Olympic victory. The were also revelations of state-sponsored doping systems in communist countries of the Soviet Bloc and in present-day Russia. These controversies have affected public perceptions of drug usage among sprint athletes, as well as track and field and the Olympics in general. The Olympic 100 metres competitions are carried out under standard international rules, as set by the International Association of Athletics Federations (IAAF). The races are segregated by gender, with one for men and one for women. The 100 m is usually held at the beginning of the Olympic athletics programme as this allows athletes