Then he began his studies at Agder University College, first for computer engineer (1998–2001) and then changed to the business administration and economics program (Siviløkonom, 2001 — 2005).

[2] Nordberg had started competing internationally only at the age of 25 at the Nordic Championship 2003 in Sweden, but failed to win any medal.

The next year, he finished third in Västerås 2004 World Orienteering Championship (WOC) in the middle distance run.

Nordberg also competed in other orienteering disciplines with the best results being 11th in sprint at Vasteras 2004 WOC and 4th in relay at Kyiv 2007 Championship.

[2] At WOC 2009 in Miskolc, Hungary, during the last leg of the relay race Thierry Gueorgiou (France), Michal Smola (Czech Republic) and Nordberg were close behind the lead runner, Martin Johansson (Sweden), when Johansson suffered a 12 cm deep penetrating trauma from a stick in his right thigh.