At club level he played with Macroom, divisional side Muskerry and was also a member of the Cork senior football team.
Twomey was the team's top scorer when Macroom won the Cork IFC title in 1990.
[3] He immediately progressed onto the under-21 team and was at right corner-forward when Cork beat Galway in the 1989 All-Ireland under-21 final.
[5] His performances in these grades resulted in Twomey being drafted onto the training panel of the Cork senior football team.
[6] During his six-year tenure he lined out in a number of National League games, however, he failed to make it onto the championship panel.