 Coughlan became a dual player at inter-provincial level when he was also added to the Munster hurling team for the 1973 Railway Cup.After making his first appearance for the team in the semi-final defeat of Connacht, he was at midfield on 17 March 1973 when Munster suffered a 1-13 to 2-08 defeat by Leinster in the final.On 17 March 1977, Coughlan was selected at left wing-back when Munster qualified to play Leinster in the Railway Cup final.