Daegu (Korean: [tɛɡu]), (대구, 大邱, literally 'large hill') formerly spelled Taegu, and officially known as the Daegu Metropolitan City, is a city in South Korea, the fourth largest after Seoul, Busan, and Incheon, and the third largest metropolitan area in the nation with over 2.5 million residents. Daegu is the capital and principal city of the surrounding Gyeongsangbuk-do province, although it is not legally part of it. The two areas combined are often referred to as Daegu-Gyeongbuk, with a total population of over 5 million.
Daegu is located in south-eastern Korea about 80 kilometres (50 miles) from the seacoast, near the Geumho River and its mainstream, Nakdong River in Gyeongsang-do. The Daegu basin, where the city lies, is the central plain of the Yeongnam region. In ancient times, there was a proto-country named Jinhan, to which the current Daegu area belonged. Later Daegu was part of the Silla Kingdom which unified the Korean Peninsula. During the Joseon Dynasty period, the city was the capital of Gyeongsang-do which was one of the traditional eight provinces of the country.
The 13th IAAF World Championships in Athletics was an international athletics competition that was held in Daegu, South Korea. It started on 27 August 2011 and finished on 4 September 2011.
The United States topped the medal standings in the competition with 25 (12 gold, 8 silver, and 6 bronze). During the competition, 41 national records, 4 area records, 3 championship records, and 1 world record was set.
On 4 April 2006, the IAAF announced that nine countries (United States, South Korea, Australia, Sweden, Spain, Russia, the United Arab Emirates, Croatia and Morocco) had submitted expressions of interest for hosting the 2011 World Championships.
When the seeking deadline passed on 1 December 2006, four candidate cities (Brisbane, Daegu, Moscow and Gothenburg) had confirmed their candidatures. Gothenburg backed out later that month, citing lack of financial support from the Swedish government.
Brisbane was announced as the Australian candidate with the Queensland Sport and Athletics Centre (formally ANZ Stadium) as the proposed venue for a championships to be held in July or August. The stadium previously hosted the 1982 Commonwealth Games and 2001 Goodwill Games. Brisbane also had an unsuccessful bid for the 2009 World Championships in Athletics.