Muhammad breaks world record in 400m hurdles at nationals
Athletics-Warholm destroys world record to win 400m hurdles gold | Reuters
The greatest race ever part II: Sydney McLaughlin wins 400m hurdles gold in world record time | Tokyo Olympic Games 2020 | The Guardian
Hot, Hot, Hot: Sydney McLaughlin Blazes To World Record In 400 Hurdles
Report: men's 400m - IAAF World Athletics Championships Doha 2019 | REPORT | World Athletics
Wayde van Niekerk wins gold, sets world record in 400m - Sports Illustrated
400 metres - Wikipedia
South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
Men's 400m world record holder Van Niekerk tests positive for coronavirus
Tokyo Olympics Daily: Karsten Warholm wins greatest ever men's 400m hurdles | Financial Times
Wayde van Niekerk sets a 400-meter record that no one saw coming - The Washington Post
Van Rhijn smashes 400m world record in Nottwil
Report: women's 400m - IAAF World Athletics Championships Doha 2019 | REPORT | World Athletics
Hima Das reacts after historic 400m gold: Thank you for the support, India - Sports News
Brilliant Van Niekerk smashes 400m world record | Reuters
Wayde Van Niekerk smashes 400m world record | Sports News,The Indian Express
Karsten Warholm breaks men's 400 hurdles world record in Norway
Wayde van Niekerk smashes Michael Johnson's record to claim 400m gold | Rio 2016 | The Guardian
Men's 400 Meters: South African Wayde van Niekerk Shatters World Record | Runner's World
Tokyo Olympics: Norway's Karsten Warholm shatters 400m hurdles world record to win gold | World News | Sky News
400 METER WORLD RECORD || WHO WILL BREAK IT? - YouTube
How The Legend Of Milkha Singh Was Born: A Look At The Races That Gave India Its Athletics Great
Fastest since 1985, Naser wins women's world 400-meter
American Sydney McLaughlin wipes out own world record to seize gold in women's 400m hurdles | CBC Sports
Karsten Warholm and Rai Benjamin Both Broke a Record, But Only One Won Gold - The New York Times
Breanna Clark breaks own world record to defend 400m Paralympic title - OlympicTalk | NBC Sports
2 Americans break previous women's 400m hurdles world record
