110 metres hurdles 100 yards (91.44 m). The first standards were attempted in 1864 in Oxford and Cambridge: The length of the course was set to 120 yards (109.7 m) and over its course, runners were required to clear ten 3 foot 6 inch (1.07 m) high hurdles. The height and spacing of the hurdles have been related to Imperial units ever since. After the length of the course was rounded up to 110 metres in France in 1888, the standards were pretty much complete (except for Germany where 1 metre high hurdles were used until 1907). The massively constructed hurdles of the
United States at the 2013 World Championships in Athletics Jennifer Simpson (1500m), Lashinda Demus (400m hurdles), and Brittney Reese (long jump) on the women's team. 2012 Diamond League champions Charonda Williams (200m), Dawn Harper (100m hurdles), Chaunte Lowe (high jump) and Reese Hoffa (shot put) were also automatic qualifiers to the team. World record holder Aries Merritt was also a Diamond League champion in 2012, but a country is only allowed one bye into the championships. The bye into the 110m hurdles was already taken by Jason Richardson, so Merritt had to qualify by placing in the championships. Decathlon Heptathlon United States at other World Championships in 2013 United