300 metres hurdles to beginning of a standard 400 meter hurdle race, but its placement on the track is shifted 100 meters around the track so it finishes at the common finish line on the straightaway, where the longer race would reach the same point near the end of the second turn. There are 8 hurdles in the high school version, the last hurdle just 10 meters before the finish line. High schools began adopting the longer hurdle event state by state starting in the 1960s. At the time, most which school competition was using United States customary units, so the race was
300 metres hurdles hurdle marks in the same place as the last seven hurdles of the standard 400-metre version, thus Masters only go over seven hurdles. While men of all ages have run over 300 hurdles, the youngest official division to use the distance is M60. M60 and M65 run over 30-inch (76.2 cm) barriers, M70 and M75 run over 27-inch barriers. Prior to 2010, older age divisions also did 300 hurdles, though the number of competitors was small. In 2010, M80+ and women's W70+ moved to doing a 200-metre race over the last five barriers of either race, thus retiring the 300