The 300 metres hurdles (also spelled 300 meters hurdles in American English) is an athletics or track and field event. It is a cut-down version of the International event the 400 metres hurdles. It is a standard event under the NFHS in American high school competition and a championship level event in Masters athletics. The two iterations of the event vary somewhat. Common to all long hurdling events, the distance between hurdles is 35 metres.