400 metres hurdles technique needed to compete. As of August 2018 !Rank !Time !Athlete !Country !Date !Venue !Ref !1 !2 !rowspan=2|3 400 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
300 metres hurdles hurdles for those divisions. By that time, 27-inch hurdles were embedded in the rulebook. Women also do the 300 hurdles, W50 to W65 divisions. Like the men, the W50 and W55 divisions do 30-inch hurdles, W60 and W65 do (27 inch) hurdles, and W70+ do the 200-metre version over 27-inch hurdles. The idea of using 27-inch (68.6 cm) hurdles was introduced in Europe in 2000. The increment does not exist on standard hurdles, which caused resistance from some NGBs, but the rules were adopted worldwide. Many modern hurdles will not go to that height or would at least require modification