IAAF World Half Marathon Championships

The IAAF World Half Marathon Championships is an annual half marathon competition organised by the International Association of Athletics Federations. It was contested from 1992 to 2005, and replaced by the IAAF World Road Running Championships, a 20 kilometres race which had its inaugural event held in 2006 in Debrecen, Hungary. After a second edition of the Road Running Championships, which was over the half marathon distance, it reverted to the original name of the World Half Marathon Championships.

The IAAF World Half Marathon Championships was first held in 1992. It comprised three races: the men's race, the women's race and the junior men's race. Furthermore, a team competition was held in each category, with the winners being decided by combining the performances of a country's top three finishers. The country with the lowest aggregate time won the team competition. The junior men's race was held in only the first and second editions, and was removed from the programme from 1994 onwards.

The competition went largely unchanged until 2006, when the competition was renamed as the IAAF World Road Running Championships. Aside from the name change, the significant difference was the distance of the race, changing from a half marathon to a 20 kilometres road race. The 20 km race featured only at the 2006 edition, and the half marathon distance returned for the 2007 World Road Running Championships.

On 29 November 2007, the IAAF announced that the name of the competition would revert to its original title of the IAAF World Half Marathon Championships, beginning with the 2008 IAAF World Half Marathon Championships in Rio de Janeiro, Brazil on 12 October 2008.

This competition should not to be confused with the IAAF World Women's Road Race Championships which were run from 1983 to 1991, or the IAAF World Road Relay Championships which took place between 1992 and 1998.

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