Sundby made his Olympic debut at the Vancouver Games and helped Norway win a silver medal in the men's 4 x 10km relay. At the 2011 World Championship Sundby helped Norway win a gold medal in the relay. He also won a bronze in the 15km classic. At the 2013 World Championship, Sundby won a silver in skiathlon. Sundby finished eighth overall in the 2012-2013 World Cup standings.
- 2013 World Championship - Silver
- 2011 World Championship - Gold (relay), Bronze (15km classic)
- 2010 Vancouver Games - Silver
Things to know:
1. His personal coach is his younger brother, Sondre.
2. Had his first child in Jan. 2013.
3. Made his World Cup debut in 2002.