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]
Biathlon The target range shooting distance is 50 metres (160 ft). There are five circular targets to be hit in each shooting round. When shooting in the prone position, the target diameter is 45 millimetres (1.8 in); when shooting in the standing position, the target diameter is 115 millimetres (4.5 in). On all modern biathlon ranges, the targets are self-indicating, in that they flip from black to white when hit, giving the biathlete, as well as the spectators, instant visual feedback for each shot fired.