Marathon from the start at Windsor Castle to the royal entrance to the White City Stadium, followed by a lap (586 yards 2 feet; 536 m) of the track, finishing in front of the Royal Box. The course was later altered to use a different entrance to the stadium, followed by a partial lap of 385 yards to the same finish. The modern standard distance for the marathon was set by the International Amateur Athletic Federation (IAAF) in May 1921 directly from the length used at the 1908 Summer Olympics in London. An official IAAF marathon course is 42.195 km (42
Mexico City Marathon Mexico City Marathon The Mexico City Marathon () is an annual road running event over the marathon distance which is held on the streets of Mexico City in late August or early September that in 2016 received IAAF Bronze Label Status. The race was established in 1983 at a time of growing interest in marathons in the country – the Independencia Marathon had been launched three years earlier and the Monterrey Marathon had been run over the full distance in 1982. The winner of the first women's race, María del Carmen Cárdenas, later became one of the first female Olympic