The government legislation that defines the R763, the Roads Act 1993 (Classification of Regional Roads) Order 2012 (Statutory Instrument 54 of 2012), provides the following official description:
Ashford — Annamoe, County Wicklow
Between its junction with R764 at Ballinahinch and its junction with R755 at Annamoe via Nuns Cross, Tiglin and Tomriland all in the county of Wicklow.[1]