Bergman had to turn in a couple of dark crevices at the end and looked stressed but could storm towards a new relay gold.
He was received by William Lind and Albin Ridefelt and together they ran jubilantly across the finish line.
Norway was almost a minute behind as second.
William Lind sent out Gustav Bergman as third on the last third leg.
He had to go out one minute after Norway's Eskil Kinneberg (competing for IFK Gothenburg) who got a head start after an almost flawless race by Kasper Fosser.
- It was a good race even though I was a bit tough in the beginning.
Got a little shaky when I felt we were in the lead.
I dropped Kasper on a road end at the end.
It is very dark and I understand those who use headlamps, says Lind after his first race in the WC.
The relay started at 18.25.
Riding field with new blood white
Albin Ridefelt was 1.35 behind on the first leg.
- I messed it up at four and got stressed and careless with the map reading.
It took a lot of time and then it became stress but the ending was really good.
It was nice to see the main competitors Norway and Switzerland also had a little trouble, says Albin Ridefelt who switched as fifth with a bloody chin.
And as I said before both Switzerland and Norway.
Ruslan Glibov, club friend with Gustav Bergman in OK Ravinen from Nacka, first switched for Ukraine who topped their team.
- I pulled in some branch at the end but it was much lighter than the last race so there is no danger. I did not think about the leg at all, but it was completely calm, he says about his blood white and the deep wound from Tuesday's middle distance.