Career
Hafsås first competed in the Biathlon World Cup in Pyeongchang, South of Korea in February 2008. His initial appearance (in a 10 km sprint) was spoiled by bad shooting, but he earned the first World Cup points of his career in the pursuit that followed, with a 21st place. Hafsås claimed his first top ten placing in the World Cup the next week, placing 9th in another sprint in Khanty-Mansiysk.
Hafsås" best finish in the Biathlon World Cup so far is a 6th place, which he earned (again in a sprint) during the opening weekend of the 2008-2009 season at Östersund.
As a cross-country skier, Hafsås has two World Cup victories (one individual and one in a relay), both of which he earned during the opening weekend of the 2009-2010 Cross-Country Skiing World Cup in Beitostølen, Norway. This earned him a spot in the Norwegian team for the next day"s 4 x 10 km relay.
At the 2010 Winter Olympics, he finished 42nd in the 15 km event. Hafsås retired after the 2012-2013 season after having been hampered by illness for three seasons.