Løberg received a silver medal in team event at the 1991 Biathlon World Championships in Lahti, and again in Novosibirsk in 1992. He finished 5th in the team event with the Norwegian team in 1989. He finished 4th in 4 × 7.5 km relay in 1990, and 6th in team event. He competed at the 1988 Winter Olympics in Calgary where he finished 6th in 4 × 7.5 km relay with the Norwegian team. He competed at the 1992 Winter Olympics in Albertville where he finished 8th in the individual, and 5th in 4 × 7.5 km relay.