and women's pole vault, women's 2,000 m and women's triple jump. The women's vault record has been advanced 9 times indoors by three different women, each ratified as a world record. The last record to be set indoors was in 2004. Sergey Bubka's 1993 pole vault world indoor record of 6.15 m was not considered to be a world record, because it was set before the new rule came into effect. Bubka's world record of 6.14 m, set outdoors in 1994, has been surpassed by five consecutive records set indoors, most recently by Armand Duplantis in 2023 with a 6.22 m (pending) mark. In 2020, Duplantis surpassed Bubka's outdoor world best (the old 6.14 m record), with a 6.15 m vault. A new IAAF-sanctioned event, the women's 50,000 m walk, does not yet have any recognised world record. Key to tables h = hand timing + = en route to a longer distance A = affected by altitude OT = oversized track X = annulled due to doping violations # = not officially ratified by World Athletics a = aided road course according to IAAF rule 260.28 est = estimate i = set indoors (overall world record tables only) Men Women Mixed Indoor world records Men Women Best performances in non-WA World Record events Events which do not qualify for World Athletics-ratified world records are typically referred to as world bests. While races over imperial measured distances were very common in the first half of the 20th century, only the mile remains common today due to its historical prominence in track and field: all other imperial measured distance races became increasingly rare, and the IAAF deleted these events from the world record books in 1976. In November 2019, World Athletics (WA; formerly IAAF) also deleted several long-distance events (track distances of 20,000 metres, 25,000 metres and 30,000 metres and road distances of 15 km, 20 km, 25 km and 30 km) from the world record books. Some road racing distances and indoor variations of outdoor events fall outside of WA's lists, and records set in uncommon events usually do not adhere to the strict criteria found in WA-ratifiable events: one example is the 150 metres record, which was set by Usain Bolt on a specially-made straight track, while previous performances (such as the Bailey–Johnson 150-metre race) were completed on a traditional circuit which included a partial bend in the track.