Magni was also 2nd in the 1956 Giro d'Italia behind Charly Gaul of Luxembourg.
In addition, Magni won the Points Jersey in the 1955 Vuelta a Espana.
Magni was 2nd in the 1951 World Championship Road Race behind Ferdi Kubler of Switzerland.
Magni was also 4th in 1947 World Championship Road Race behind Theo Middelkamp of Holland, Albert Sercu of Belgium, and Jef Jansen of Holland.
In addition, Magni was 4th in 1952 World Championship Road Race behind Heinz Muller of Germany, Gottfried Weilemann of Switzerland, and Ludwig Hormann of Germany.
Magni won the Tour of Flanders Classic three times in a row, in 1949, 1950, and 1951.
Magni shares the record of three victories with Belgians Achiel Buysse, Eric Leman and Johan Museeuw.
Magni was also 3rd in the 1950 Paris-Roubaix Classic behind Fausto Coppi of Italy and Maurice Diot of France.