Hellsten competed in 100–400 m events at the 1952, 1956 and 1960 Olympics and won a bronze medal in the 400 m in 1956, shared with Ardalion Ignatyev.
Hellsten participated in 100–400 m events at the 1952, 1956, and 1960 Olympics. He won a bronze medal in the 400 m event in 1956, shared with Ardalion Ignatyev.