[1] Apart from football, other sports practised at San Telmo are basketball, boxing, field hockey, futsal, handball, martial arts, and artistic roller skating.

In the first official match of the club, the rain made the colour blue to fade until it covered the white part of the jerseys in a light-blue tone.

In 1926 and due to the lack of a deed of sale, San Telmo had to move to Isla Maciel in Dock Sud district of Greater Buenos Aires.

The first title won by San Telmo was 1949 Primera C but due to a restructuring of the Argentine league system, the squad did not promote to the upper division.

It was closed from February 11, 2006 due to violent incidents in a match against Talleres (BA),[3] which caused San Telmo to play its home games at the Estadio Alfredo Ramos, Club Comunicaciones's venue.