Peterson ensured Sweden warmed up for Sunday's team sprint races by leading a one-two with compatriot Emil Joensson in the Czech Republic, both skiers clocking 3:30.5 minutes.
Having led heading into the final stages Norway's duo of Paal Golberg and Eirik Brandsdal were forced to settle for third and fourth respectively.
Peterson looked out of the running heading into the business end of the race, however having employed the most intelligent line and tactics, it was the Swede who was triumphant.
Meanwhile Mona-Liisa Malvalehto sprung something of an upset by upstaging the queen of women's cross country Justyna Kowalyczyk in their sprint race.
The Finnish skier led from start to finish on a reduced course of 0.85km to take the victory – her first World Cup triumph – in 2:03.8m inutes.
Maiken Caspersen Falla of Norway completed the podium behind Kowalyczyk and a delighted Malvalehto said: “It is a big day for me.
“It was a very good course and for me it was not too long.”
- Sports & Recreation
- Emil Joensson
- Eirik Brandsdal