13-Year-Old 47s 400m WORLD RECORD! - YouTube
World 400m champion banned for two years
Michael Norman and Sydney McLaughlin star at world track meet - Los Angeles Times
Brilliant Van Niekerk smashes 400m world record | Reuters
South Africa's Wayde van Niekerk breaks 400m world record - YouTube
400 metres - Wikipedia
Men's 400m world record holder Van Niekerk tests positive for coronavirus
American Sydney McLaughlin wipes out own world record to seize gold in women's 400m hurdles | CBC Sports
2019 World Athletics Championships – Men's 400 metres - Wikipedia
Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
400 Metres
Norway's Karsten Warholm smashes 400-meter hurdles world record to win gold - The Boston Globe
400 Metres
/cloudfront-us-east-1.images.arcpublishing.com/gray/PRGKWC6UL5BMVKN5YNJA33DQMY.jpg "McLaughlin sets new world record in 400M hurdles, books spot on Team USA")
McLaughlin sets new world record in 400M hurdles, books spot on Team USA
400 METER WORLD RECORD || WHO WILL BREAK IT? - YouTube
43.03 – The Fastest 400m in History – Žiga P. Škraba
Mekhi Gammons 13-Year-Old 400m World Record | AAU National Club Championship
![Christopher Taylor 400m Age Group World Record [Video]](https://speedendurance.com/wp-content/uploads/2015/03/Christopher-Taylor-400m-Age-Group-World-Record.jpg "Christopher Taylor 400m Age Group World Record [Video]")
Christopher Taylor 400m Age Group World Record [Video]
Wayde van Niekerk sets a 400-meter record that no one saw coming - The Washington Post
Record-holder Van Niekerk eases through 400m heat, U.S. trio advance | Reuters
Fastest since 1985, Naser wins women's world 400-meter
Van Niekerk betters 400m world record
Fastest since 1985, Naser wins women's world 400-meter
Wayde van Niekerk smashes Michael Johnson's record to claim 400m gold | Rio 2016 | The Guardian
Those 400 metres in Rome: Heartbreak that won fans over | Sports News,The Indian Express
