Goalkeeper Angelo Cameroni was called up to the Italy national side in 1920; he was the first Legnano player to achieve this.

Luigi Allemandi played four seasons with the club from 1921 onwards, until he was bought by Italian giants Juventus.

The first match at the top level of Italian football was the shocking 2–1 defeat of Italy's oldest club, Genoa C.F.C.

Unfortunately for Legnano, they finished at the bottom of the table that season and were relegated; other notable results however were a 1–1 draw with eventual runners up A.S. Roma, and a 2–1 defeat of S.S.C.

Giovanni Mari took over as club president in 1979 and under him, Legnano would achieve the championship of Serie C2.

Legnano Calcio 1913 and was admitted to Group N of Prima Categoria Lombardy in the 2011–12 season.