Norwegian world-record holder Karsten Warholm turned in the fastest time in 400-meter hurdles qualifying as he tries to defend his Olympic title.

Olympic champion Karsten Warholm won his 400-meter hurdles race on Sunday and then turned to join in the crowd booing environmental protesters who disrupted the Diamond League event near the finish.

Karsten Warholm crushed his own 300-meter hurdles world best time in front of a home crowd in Oslo, Norway on Wednesday, clocking 32.67 seconds.

Two-time Olympic pole vault champion Armand Duplantis beat good friend Karsten Warholm in an exhibition 100-meter sprint on Wednesday, crossing the line in 10.37 seconds at Letzigrund Stadium.

Norway’s Karsten Warholm powered to victory in the 400-meter hurdles, then put on his trademark Viking horns to celebrate his third victory at the world championships.

Karsten Warholm, the Norwegian reigning world champion and gold medalist in the 400-meter hurdles has a budding rivalry with the American Rai Benjamin. It’s just what track and field needs.

Why Karsten Warholm vs Mondo Duplantis sprint showdown could offer clues to the future of athletics - The two world-record holders will race over 100m in Zurich in an exhibition event that has ...

Norwegian world-record holder Karsten Warholm turned in the fastest time in 400-meter hurdles qualifying as he tries to defend his Olympic title.

Norwegian runner Karsten Warholm always stands out from the rest on the track. His approach to fitness is even more unique.

Olympic champion Karsten Warholm has won his 400-meter hurdles race which saw environmental protesters get on the track before it had finished.

By George Ramsay, CNN (CNN) — Karsten Warholm crushed his own 300-meter hurdles world best time in front of a home crowd in Oslo, Norway on Wednesday, clocking 32.67 seconds.