Paavo Johannes Nurmi was a Finnish middle-distance and long-distance runner. He was called the "Flying Finn" or the "Phantom Finn", as he dominated distance running in the early 20th century. Nurmi set 22 official world records at distances between 1500 metres and 20 kilometres, and won nine gold and three silver medals in his twelve events in the Summer Olympic Games. At his peak, Nurmi was undefeated for 121 races at distances from 800 m upwards. Throughout his 14-year career, he remained unbeaten in cross country events and the 10,000 metres.