Johaug won her first individual gold medal in the 30 km mass start race at the 2011 World Championships in Oslo. She also won gold in the 4 x 5 km relay, bronze in the 7.5 km + 7.5 km double pursuit and fourth in the 10 km individual start. At the 2013 World Championships she won her second individual gold medal in the 10 km freestyle race.