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
2016 IAAF World U20 Championships – Women's 100 metres hurdles m/s 22 July<br> Start time: 9:55 Temperature: 21 °C Humidity: 49 %<br> Wind: +0.7 m/s Note:<br> IAAF Rule 168.7 - Not jumping each hurdle<br> IAAF Rule 168.7(b) - Deliberately knocking down a hurdle 22 July<br> Start time: 10:02 Temperature: 21 °C Humidity: 49 %<br> Wind: +1.5 m/s 22 July<br> Start time: 10:10 Temperature: 21 °C Humidity: 49 %<br> Wind: +1.0 m/s 2016 IAAF World U20 Championships – Women's 100 metres hurdles The women's 100 metres hurdles event at the 2016 IAAF World U20 Championships was held at Zdzisław Krzyszkowiak Stadium on 22, 23 and 24 July. 24 July<br> Start time: