[2] Fanning joined the Glynn-Barntown club at a young age and played in all grades at juvenile and underage levels.
He enjoyed championship success as a dual player in the under-21 grades before eventually joining the club's top adult teams.
[citation needed] On 3 October 2009, Fanning won a Wexford Intermediate Football Championship title following Glynn-Barntown's 2-07 to 1-05 defeat of St Mary's Rosslare in the final.
He made his final appearance in the grade on 20 June 2012 when Wexford suffered a 3-20 to 4-06 defeat by Kilkenny at the semi-final stage.
Fanning lined out in his usual position in goal and scored a late penalty to secure a 1-23 to 0-23 defeat of Kilkenny.