Kilroy first played hurling at juvenile and underage levels with the Banner club before later progressing to adult level. He was part of the club's Clare JAHC-winning team in 2025.[1] Kilroy also played hurling during his time as a student in St Flannan's College, including the Dr Harty Cup competition.[2] He won an All-Ireland Freshers HC title with University of Limerick in 2026.[3]