Berglund also won two medals at the ICF Canoe Sprint World Championships with a gold (K-4 1000 m: 1948) and a silver (K-2 1000 m: 1938). Note that the K-4 1000 m event was not part of the Summer Olympics until the 1964 games in Tokyo. It was considered an extraordinary event and was part of the International Canoe Federation's 1948 world championships rather than the 1948 Games.