400 metres - Wikipedia
Wayde van Niekerk smashes Michael Johnson's record to claim 400m gold | Rio 2016 | The Guardian
Olympic champion Sydney McLaughlin breaks her own world record in 400-meter hurdles
Olympics 2021: World record in 400-meter hurdles for Karsten Warholm
Sydney McLaughlin breaks her own 400-meter hurdles world record | CNN
U.S. Takes Gold And Silver In The Fastest Women's 400 Meter Hurdles Ever : Live Updates: The Tokyo Olympics : NPR
Sydney McLaughlin shatters 400-meter hurdles world record - The Boston Globe
Twitter reacts as Karsten Warholm smashes 400m hurdles world record at 2021 Tokyo Olympics | Sporting News
Meet Sydney McLaughlin, the 400-m Hurdles World Record Holder | Time
VIDEO: South Africa's Van Niekerk shatters world record in 400 to win Olympic gold – The Mercury
Karsten Warholm smashes 400m hurdles world record in one of greatest races in history | Tokyo Olympic Games 2020 | The Guardian
/cdn.vox-cdn.com/uploads/chorus_image/image/50388485/Screen_Shot_2016-08-14_at_9.02.30_PM.0.0.png "Olympics 2016 results: Wayde van Niekerk sets world record from lane 8 in men's 400m run - SBNation.com")
Olympics 2016 results: Wayde van Niekerk sets world record from lane 8 in men's 400m run - SBNation.com
McLaughlin sets new world record in 400M hurdles, books spot on Team USA
Rai Benjamin Takes Silver In Record-Breaking 400-Meter Hurdles Finish
Sydney McLaughlin breaks her own world record in 400m hurdles at World Athletics Championships - CBSSports.com
400 metres at the Olympics - Wikipedia
South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
Wayde van Niekerk: South African smashes 400-meter world record to take gold | CNN
Sydney McLaughlin Beat Dalilah Muhammad, Set a New World Record and Won Gold - The New York Times
Sydney McLaughlin, U.S. women set 4×400-meter relay record at World Championships – Orange County Register
Men's 400m world record holder Van Niekerk tests positive for coronavirus
McLaughlin Smashes Own World Record in Epic Women's 400m Hurdles Final | The Sport Digest
