Answer
Byåsen IL is the club that Klæbo represents. Byåsen IL is a Norwegian sports club from Trondheim, founded in 1921. The club has sections for association football, team handball, athletics, cross-country skiing, alpine skiing, and orienteering. Klæbo is a cross-country skier who has represented Byåsen IL in various competitions, including the FIS Cross-Country World Cup and the Winter Olympics.