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
Athletics at the 1908 Summer Olympics – Men's marathon (in hours) prior to the 1908 Summer Olympics. "(*)" distance 40.0 km "(**)" distance 41.86 km Johnny Hayes set a new Olympic record with 2:55:18.4 hours. 27 runners finished the marathon legally, though Dorando Pietri's (disqualified) performance was perhaps the most applauded; his finishing time was 2:54:46.4 hours, half a minute ahead of the winner. The dramatic finish of the 1908 Olympic marathon led to worldwide marathon fever. In a postcard sent at the time, an American spectator said he had "just seen the greatest race of the century." Since Pietri himself had not been responsible for his disqualification Queen