Men's 400m world record holder Van Niekerk tests positive for coronavirus
Norway's Warholm breaks 29-year-old 400m hurdles world record - CGTN
Norway's Warholm breaks 400 metres hurdles world record | Reuters
400 metres - Wikipedia
43.03 – The Fastest 400m in History – Žiga P. Škraba
Wayde Van Niekerk 'massacres' the legendary Michael Johnson's world mark to win 400 metres | South China Morning Post
Tokyo Olympics: Norway's Karsten Warholm breaks 29-year-old 400m
Australian Titmus breaks 400m freestyle world record | Sports | China Daily
Fastest since 1985, Naser wins women's world 400-meter
Michael Johnson Sevilla 1999: Men's 400m world record - YouTube
Watch Marita Koch's world record 400m run | World records, 400m world record, Track and field
We've All Been Waiting For This... || The 400 Meter World Record - YouTube
Wayde van Niekerk: South African smashes 400-meter world record to take gold | CNN
Wayde van Niekerk sets a 400-meter record that no one saw coming - The Washington Post
Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
Muhammad sets world record in 400m hurdles
McLaughlin books athletics worlds berth with 400m hurdles world record | Arab News
400 METER WORLD RECORD || WHO WILL BREAK IT? - YouTube
Sydney McLaughlin Beat Dalilah Muhammad, Set a New World Record and Won Gold - The New York Times
Wayde van Niekerk smashes Michael Johnson's record to claim 400m gold | Rio 2016 | The Guardian
South Africa's Wayde van Niekerk Breaks Olympics 400m World Record - Face2Face Africa
Michael Johnson (USA) breaking the world record (43.18) in the 400m at the 1999 World Track and Field Championships Stock Photo - Alamy
