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
All-weather running track built to NFHS high school specifications that allow smaller lanes. The IAAF also specifies a preferred radius for the turns at 37 metres, but allows a range. Major international level meets are conducted and world records are allowed to be set on tracks that are not exactly 37 metres, but do fall in the range. All-weather running track An all-weather running track is a rubberized artificial running surface for track and field athletics. It provides a consistent surface for competitors to test their athletic ability unencumbered by adverse weather conditions. Historically, various forms of dirt, grass, sand and crushed cinders