	Donoghue was drafted onto the Galway minor team in advance of the 1991 All-Ireland Championship. He made his first appearance on 9 August when he lined out at left corner-back in a 1-16 apiece draw with Kilkenny in the All-Ireland semi-final. Donoghue was switched to left wing-back for the All-Ireland final against Waterford on 8 September. He ended the game with a winners' medal following a 1-13 to 2-04 victory.