In April 2017 Forsberg announced that she and Kilian Jornet would attempt to climb Cho Oyu, a Himalayan peak of 8,188 meters, with a light and fast style spending only two weeks away from home. As preparation the pair slept for two weeks in an altitude tent simulating an altitude of 5,500 to 6,000 meters, and trained for a week at 4,000 meters in the Alps.