Sydney Mclaughlin sets new world record in women's 400M

Men's 400m final - World Athletics U20 Championships

48.14 for Salwa Eid Naser as she becomes 400m world champion

"I think I can run faster." After his fastest season-opener ever in the 400m hurdles, @kwarholm is hungrier than ever before 😳 Catch him at tomorrow’s @bauhausgalan for more fireworks 🔥 | World Athletics

Fastest 400m time in the world this year set by Elija Godwin 😮‍💨

400m champs

Last 5 Women's 400m Champions