20K run

The 20K run (20 kilometres, or approximately 12.4 miles) is a long distance foot race.

The event held IAAF world championship status in 2006 only, when the existing IAAF World Half Marathon Championships briefly hosted the shorter distance.

[3] IAAF records require the 20 km distance to be run on a course without a significant drop in elevation between the start and finish points and where the birds-eye distance between the start of finish points is less than ten kilometres.

The Association of Road Racing Statisticians has an additional criteria in that it requires records to be set in competitions of the given distance, thus it does not recognise Kiplagat's run due to it being recorded en route to a longer distance.

[4] There are several annual road running competitions over the 20 km distance, mostly based in Western Europe, the United States, and Japan.