In the early 1970s won Tommy Prim even as a young rider and junior repeatedly Swedish and Scandinavian titles in cycling. In 1976 he started in the Olympic Games in Montreal in the team time trial and finished with the Swedish team finished seventh. Even as an amateur he won multiple top rankings in major stage races such as 1978 each ranked second in the overall standings of the Settimana Ciclista Lombarda and the Flèche du Sud.
From 1980 to 1986 Prim went as a professional team Bianchi. In 1983, he won a classic as the first Swede with Paris -Brussels. Several times he made a successful start in the Giro d' Italia.
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