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
London Marathon London Marathon The London Marathon (currently known through sponsorship as the Virgin Money London Marathon) is a long-distance running event held in London, United Kingdom, part of the World Marathon Majors. The event was first run on 29 March 1981 and has been held in the spring of every year since. Since 2010, the race has been sponsored by Virgin Money. The most recent event was the 2018 London Marathon on 22 April 2018. The date of the next London Marathon is Sunday, 28 April 2019. The race was founded by the former Olympic champion and journalist Chris Brasher and