The A23 is an road in

County Down County Down () is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the traditional thirty-two counties of Ireland. It covers an area of and has a population of 531,665. It borders County Antrim to the ...

, in

Northern Ireland Northern Ireland ( ga, Tuaisceart Éireann ; sco, label= Ulster-Scots, Norlin Airlann) is a part of the United Kingdom, situated in the north-east of the island of Ireland, that is variously described as a country, province or region. Nort ...

. The route starts in near the

Short Strand The Short Strand ( ga, an Trá Ghearr) is a working class, inner city area of Belfast, Northern Ireland. It is a mainly Catholic and Irish nationalist enclave surrounded by the mainly Protestant and unionist East Belfast. It is on the east ba ...

district in east

Belfast Belfast ( , ; from ga, Béal Feirste , meaning 'mouth of the sand-bank ford') is the capital and largest city of Northern Ireland, standing on the banks of the River Lagan on the east coast. It is the 12th-largest city in the United Kingdo ...

and follows the Castlereagh Road through the southeastern suburbs of the city. Upon passing through the A55 Outer Ring Road, the A23 becomes the Ballygowan Road. It passes through the

Castlereagh Hills Castlereagh may refer to: People * Marquess of Londonderry, subsidiary title Viscount Castlereagh, used as courtesy title for the Marquess's eldest son; in particular ** Robert Stewart, Viscount Castlereagh Robert Stewart, 2nd Marquess of Lond ...

and finishes in the village of

Ballygowan Ballygowan () is a village in County Down, Northern Ireland. It is within the Ards and North Down Borough. The town of Comber is a short distance to the north-east, the town of Saintfield to the south, and the city of Belfast further to the no ...

at a roundabout with the A21.

References

1 Roads in County Down {{Belfast-stub