Mohammad Anas smashes 400m national record to qualify for World Championships | More sports News - Times of India
Wayde van Niekerk smashes Michael Johnson's record to claim 400m gold | Rio 2016 | The Guardian
400 metres - Wikipedia
Who is Wayde van Niekerk, South Africa's Record-Breaking 400m Champion?
Men's 400 Meters: South African Wayde van Niekerk Shatters World Record | Runner's World
Sydney McLaughlin runs 51.41 secs, breaks 400m hurdles world record at USA Outdoor Championships | World-Track and Field
/cloudfront-us-east-1.images.arcpublishing.com/pmn/GNGJK66BR5HZDIWARO2KZC5IT4.jpg "Tokyo Olympics: Sydney McLaughlin 400m hurdles gold is world record in track & field")
Tokyo Olympics: Sydney McLaughlin 400m hurdles gold is world record in track & field
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
Wayde van Niekerk: South African smashes 400-meter world record to take gold | CNN
American Sydney McLaughlin wipes out own world record to seize gold in women's 400m hurdles | CBC Sports
Blake Leeper breaks Oscar Pistorius' 400 metre Paralympic World record
Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
Women's 400m World Record is 48.25 – Žiga P. Škraba
McLaughlin obliterates world 400m hurdles record with 50.68 in Oregon | REPORT | World Athletics
Femke Bol breaks 41-year world record in the women's indoor 400 meters | CNN
Wayde van Niekerk wins gold, sets world record in 400m - Sports Illustrated
400 METER WORLD RECORD || WHO WILL BREAK IT? - YouTube
COLLEGIATE RECORD: Athing Mu Lowers Own 400-Meter All-Time Best ::: USTFCCCA
Sydney McLaughlin sets new world record, dominates women's 400 hurdles at World Athletics Championships: Video highlights - oregonlive.com
43.03 – The Fastest 400m in History – Žiga P. Škraba
