Hägg and fellow Swede, Arne Andersson, lowered the record for the mile to just over four minutes (4:01.4) – accelerating the progression of the world record in the mile run. Both athletes set three world records for the mile. Hägg first set the record in July 1942 at 4:06.2, a time which was equalled by Andersson later the same month. This record was broken by Hägg (4:04.6) in September the same year. Andersson recaptured the world record in July 1943 (4:02.6), and improved it further in July 1944 (4:01.6). However, Hägg then managed a time of 4:01.4 in Malmö in July 1945. Hägg's record was not broken until Roger Bannister ran the first sub-4 mile in Oxford in May 1954.[3]
Hägg was also the first man to run a sub-14 minute 5,000 metres, a feat he achieved in September 1942. This record stood for over eleven years. The next world record for the men's 5,000 metres to stand for this long was set in May 2004 by Kenenisa Bekele of Ethiopia. His record stood for over sixteen years.
In 1946, Gunder Hägg was branded a professional because he received payments for running. He was therefore barred from competition, together with Arne Andersson and Henry Jonsson.[3][5] Four years earlier, he earned the Svenska Dagbladet Gold Medal.[1]
