Rai Benjamin Shocked by Hurdle Record, 2nd Place to Karsten Warholm
Tokyo Olympics Daily: Karsten Warholm wins greatest ever men's 400m hurdles
Sydney McLaughlin-Levrone eyes Marita Koch's 400-meter world record
Karsten Warholm smashes 400m hurdles world record, wins gold in Tokyo - Canadian Running Magazine
The men's 400 world record moves rarely, but it does move dramatically
Sydney McLaughlin breaks her own 400-meter hurdles world record | CNN
Wayde van Niekerk - Wikipedia
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World Athletics Championships live - Hudson-Smith breaks European record in 400m semi-final - Eurosport
The World's Fastest (Old) Man - The New York Times
Has any Olympic runner ever medaled in the 100m/200m/and 400 m? - Quora
Dutch runner Femke Bol breaks own 400m indoor world record
Karsten Warholm smashes 400m hurdles world record in one of greatest races in history | Tokyo Olympic Games 2020 | The Guardian
Canadian teen Morales Williams unbothered by world-record nullification, sets high hopes for Olympics | CBC Sports
Record-holder Van Niekerk eases through 400m heat, U.S. trio advance | Reuters
Van Niekerk betters 400m world record
Women's 400m World Record is 48.25 – Žiga P. Škraba
We've All Been Waiting For This... || The 400 Meter World Record - YouTube
Women's 400m Final | World Athletics Championships - YouTube
Door opens for Paulino to step up to 400m gold | Reuters
South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
400 Metres
400 metres - Wikipedia
Wayde van Niekerk: Five things to know about the Olympic 400m champion and world record holder
Canadian teenager runs 400m indoor world record | CTV News
Men's 400 Meters: South African Wayde van Niekerk Shatters World Record | Runner's World
