Texas signee Lauren Lewis of Prosper breaks state record in 400 meters at area meet
400 Metres
Two Titles, School Record Highlight Final Day Of SEC T&F Meet - University of Georgia Athletics
Fastest 400-Meter Dash While Wearing Crocs: Niklas Klei Sets World Record
Karsten Warholm Sets World Record in 400-Meter Hurdles - The New York Times
Niklas Klei Sets World Record for Fastest 400-Meter Dash While Wearing Crocs | 2022 Crocs 400-Meters
Men's 400 Meters: South African Wayde van Niekerk Shatters World Record | Runner's World
43.03 – The Fastest 400m in History – Žiga P. Škraba
Fastest High School 400m In 2020 - YouTube
Fastest since 1985, Naser wins women's world 400-meter
Record-holder Van Niekerk eases through 400m heat, U.S. trio advance | Reuters
Why the 400m is the Ultimate Race - stack
How to Run a Faster Indoor 400 Meter Dash - YouTube
What's a good 400m time? For all ages groups
400 Meter Training from Supertraining
Mekhi Gammons 13-Year-Old 400m World Record | AAU National Club Championship
Van Niekerk betters 400m world record
400 METER WORLD RECORD || WHO WILL BREAK IT? - YouTube
Wayde van Niekerk: Five things to know about the Olympic 400m champion and world record holder
400 Meter Training - A Scientific Approach
Breanna Clark breaks own world record to defend 400m Paralympic title - OlympicTalk | NBC Sports
Female runner known for 400-meter upset is suspended
