The official description of the R114 from the Roads Act 1993 (Classification of Regional Roads) Order 2012[3] reads:
R114: Dublin - Rathfarnham - Brittas, County Dublin
Between its junction with R137 at Dame Street in the city of Dublin and its junction with N81 at Brittas in the county of South Dublin via South Great Georges Street, Aungier Street, Wexford Street, Camden Street Lower, Charlotte Way, Harcourt Street, Harcourt Road, (and via Camden Street Upper), Richmond Street South, Rathmines Road Lower, Rathgar Road, Terenure Road East and Rathfarnham Road in the city of Dublin: Rathfarnham Road, Butterfield Avenue, Old Bridge Road, Firhouse Road, Bohernabreena Road, Ballinascorney Upper and Aghfarrel Road in the county of South Dublin.