Name

Over the years, the name of the club underwent several changes until history came full circle and a return to the original name of KS "Sęp" took place. This name was first used in 1934. Then it was transformed successively: in 1949 to Związkowiec, in 1950 to Włókniarz, and later that same year to Start, in 1958 to Żelechowianka, in 1968 to LZS Sęp, in 1981-1982 to Syrena Żelechów, in 1982 to Syrena/Sęp II - in junior classes. The return to the original name of KS "Sęp" took place in 2003 and it is still used to this day.