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
2012 Olympic Marathon Course distances relative to the lap start point of various prominent landmarks passed on the route are shown in the table below: When London submitted its bid for the Olympic Games in 2004, the bid chairman Sebastian Coe said: "The marathon course has been designed to include as many of the city's landmarks as possible". Although the final route is different from the one proposed in the bid, it still passes many notable landmarks. Originally the route was planned to start at Tower Bridge, run through Tower Hamlets and finish at the Olympic Stadium. It would have had a 580 m