Marathon world record progression races were first held in 1896, but the distance was not standardized by the International Association of Athletics Federations (IAAF) until 1921. The actual distance for pre-1921 races frequently varied slightly from the present figure of 42.195 km (26 miles 385 yards). In qualifying races for the 1896 Summer Olympics, Greek runners Charilaos Vasilakos (3:18:00) and Ioannis Lavrentis (3:11:27) won the first two modern marathons. On April 10, 1896, Spiridon Louis of Greece won the first Olympic marathon in Athens, Greece in a time of 2:58:50; however, the distance for the event was reported to be only 40,000 meters. Three
Athletics at the 1908 Summer Olympics – Men's marathon Olympic Association that the 1908 Olympics would include a marathon of about 25 miles or 40 kilometres. The British Olympic Council handed responsibility for organising the Marathon to the Amateur Athletic Association, but they had no experience at organising a road race of such a length. In late 1907, an offer was made by Jack Andrew honorary secretary of the Polytechnic Harriers to take over the task. This was accepted in February 1908, though already, in November 1907, a route of "about 25 to 26 miles in distance" had been published in the newspapers, starting at Windsor Castle and finishing