what is the distance between hurdles in 100m
Hurdling In sprint hurdle races for men, regardless of the length of the race, the first hurdle is 13.72 m (45 ft) from the starting line and the distance between hurdles is 9.14 m (30 ft). In sprint hurdle races for women, the first hurdle is 13 m (42 ft 8 in) from the starting line and the distance between hurdles is 8.5 m (27 ft 11 in). In long hurdle events, whether for men or women, the first hurdle is 45 m (147 ft 8 in) from the starting line and the distance between hurdles is 35 m (114 ft 10 in). Most races which are shorter than the standard distance (such as indoor races) are simply run over fewer hurdles but use the same distances from the starting line.[13] There are variations on hurdle height and spacing for the age groups of athletes competing. See Masters athletics (track and field) and Youth athletics.[15]
Usain Bolt Usain St Leo Bolt OJ, CD (/ˈjuːseɪn/; born 21 August 1986) is a retired Jamaican sprinter. He is the first person to hold both the 100 metres and 200 metres world records since fully automatic time became mandatory. He also holds the world record as a part of the 4 × 100 metres relay. He is the reigning Olympic champion in these three events. Because of his dominance and achievements in sprint competition, he is widely considered to be the greatest sprinter of all time.[8][9][10][11]