Career
Warholm is in the 2014 season competing in decathlon as well as in specialized events. Possible future specialitzation is the long jump, hurdling and 400 meters. His relative worst results in the octathlon have been in the throw events.
In June 2014, Warholm set Norwegian junior record in the 400 meters with the time 46,31.
He represents the sports club Dimna Illinois and is trained by Arve Hatløy.