26-year-old Warholm has long been the world's best in his branch, the 400-meter hurdles.
So ahead of the Athletics World Championships in Eugene, USA, he was unsurprisingly the favourite.
But an injury before the championship interrupted the world record holder's upload.
The WC ended in disappointment as the world star ran into seventh place.
- I don't like losing and it bothers me a lot.
I have to admit that.
At the same time, I'm happy about it too, because it just means that this means a lot to me.
The feelings are strong when I win and they are just as strong when I lose, he tells Dagbladet.
"Doesn't collect seventh places"
He tells the newspaper that both the upload and the aftermath have been terrible, but have been something he has just "had to put up with".
- The fact that we got to the WC and didn't get injured is a plus, but at the same time I don't collect seventh places.
Now Karsten Warholm is loading up for the athletics EC in Munich, which starts on August 15.
There, despite seventh place in the WC, he is still the unequivocal favourite.
SVT broadcasts from the championship - here are all the times