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
Bangkok Marathon miles) to 27.6 km (17.1 miles). According to organisers, the increase was due to the race officials directing runners to take a turn at the wrong place which added over 3 km extra to each of the two laps. The mistake sparked humour and outcry in the social and news media. "The Guardian" called it "world's longest half marathon". Some comments on social media called it a "Super Half Marathon", while some called it a byproduct of "race inflation". Organizers apologized for the mistake and decided to offer a T-shirt saying "Finisher of 27.6 km" to participants who completed the