Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
Sydney McLaughlin runs 51.41 secs, breaks 400m hurdles world record at USA Outdoor Championships | World-Track and Field
Fastest since 1985, Naser wins women's world 400-meter
Niekerk breaks 400m world record || Niekerk breaks 400m world record
McLaughlin obliterates world 400m hurdles record with 50.68 in Oregon | REPORT | World Athletics
COLLEGIATE RECORD: Athing Mu Lowers Own 400-Meter All-Time Best ::: USTFCCCA
Mohammad Anas smashes 400m national record to qualify for World Championships | More sports News - Times of India
American Sydney McLaughlin wipes out own world record to seize gold in women's 400m hurdles | CBC Sports
Fastest 400-Meter Dash While Wearing Crocs: Niklas Klei Sets World Record
McLaughlin breaks own 400 meters hurdles record with 'Track Town, USA' magic | Reuters
2016 Rio Olympics -- Wayde van Niekerk of South Africa wins men's 400-meter final in world-record 43.03 seconds - ESPN
43.03 – The Fastest 400m in History – Žiga P. Škraba
Wayde van Niekerk: Five things to know about the Olympic 400m champion and world record holder
/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
Men's 400 Meters: South African Wayde van Niekerk Shatters World Record | Runner's World
Wayde van Niekerk smashes Michael Johnson's record to claim 400m gold | Rio 2016 | The Guardian
How van Niekerk broke the 400m world record
400 metres - Wikipedia
Dutch Woman Smashes a World Record Unbroken For 41 Years–While Her Home Audience Cheers
Wayde van Niekerk: South African smashes 400-meter world record to take gold | CNN
Women's 400m World Record is 48.25 – Žiga P. Škraba
Sydney McLaughlin sets new world record, dominates women's 400 hurdles at World Athletics Championships: Video highlights - oregonlive.com
