Canada's women run to national indoor record in 400m relay at world championships | CBC Sports
Rio Olympics 2016: Wayde van Niekerk breaks world record to win Olympic gold - BBC Sport
Bol breaks world indoor 400m record with 49.24 in Apeldoorn | REPORT | World Athletics
Men's 400 Meters: South African Wayde van Niekerk Shatters World Record | Runner's World
Femke Bol sets new indoor women's 400m world record with 49.26s - CGTN
Michael Johnson Sevilla 1999: Men's 400m world record - YouTube
The greatest race ever part II: Sydney McLaughlin wins 400m hurdles gold in world record time | Tokyo Olympic Games 2020 | The Guardian
400 metres - Wikipedia
McLaughlin breaks own 400 meters hurdles record with 'Track Town, USA' magic | Reuters
Women's 400m Final | World Athletics Championships - YouTube
Sydney McLaughlin Broke Her Own World Record. Again. - The New York Times
Tokyo Olympics Daily: Karsten Warholm wins greatest ever men's 400m hurdles
Femke Bol breaks 41-year world record in the women's indoor 400 meters | CNN
Men's 400m world record holder Van Niekerk tests positive for coronavirus
Karsten Warholm and Rai Benjamin Both Broke a Record, But Only One Won Gold - The New York Times
Records Fell at the Track Worlds. A Trend? Not So Fast. - The New York Times
400 Metres
Track & Field Worlds 2022: Wayde van Niekerk, Kirani James and Michael Norman chasing 400m gold: Preview, schedule & how to watch
The men's 400 world record moves rarely, but it does move dramatically
Wayde van Niekerk sets a 400-meter record that no one saw coming - The Washington Post
Bol breaks long-standing world indoor 400m record | Reuters
How van Niekerk broke the 400m world record
South African beats Michael Johnson's 17-year-old 400m world record for gold – The Denver Post
/cloudfront-us-east-2.images.arcpublishing.com/reuters/OPZ7WLYXJZLZXB5J4QJ7QVWWL4.jpg "Record-holder Van Niekerk eases through 400m heat, U.S. trio advance | Reuters")
Record-holder Van Niekerk eases through 400m heat, U.S. trio advance | Reuters
