Karsten Warholm of Norway is the new world record-holder in the men's 400m hurdles, toppling from track and field's all-time bests pedestal a performance run by American Kevin Young at the 1992 ...

On July 1, Warholm broke American Kevin Young's 29-year-old world record of 46.78 seconds at a Diamond League meet with a time of 46.70, and he blew by that mark just over a month later to win gold in ...

Karsten Warholm of Norway absolutely pulverized his own world record Tuesday in Tokyo by three-quarters of a second, setting an unfathomable mark of 45.94 – one that may never be surpassed – to win ...

Even world-record-holding athletes can be surprised by their personal feats. Norway’s Karsten Warholm crushed his own world record to win the men’s 400m hurdles final in 45.94 seconds on Monday night.