The A22 is a road in County Down, in Northern Ireland

Northern Ireland

Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

. Its route starts in Dundonald

Dundonald

Dundonald is a large settlement in County Down, Northern Ireland. It lies east of Belfast and is often deemed to be a suburb of the city. It includes the large housing estate of Ballybeen, and many new housing estates have emerged in the past ten years....

 and runs to Comber

Comber

Comber is a small town in County Down, Northern Ireland. It lies 5 miles south of Newtownards, at the northern end of Strangford Lough. It had a population of 8,933 people in the 2001 Census. Comber is part of the Borough of Ards...

, forming the main transport corridor connecting Belfast

Belfast

Belfast is the capital of and largest city in Northern Ireland. By population, it is the 14th biggest city in the United Kingdom and second biggest on the island of Ireland . It is the seat of the devolved government and legislative Northern Ireland Assembly...

 and Comber, a commuter town

Commuter town

A commuter town is an urban community that is primarily residential, from which most of the workforce commutes out to earn their livelihood. Many commuter towns act as suburbs of a nearby metropolis that workers travel to daily, and many suburbs are commuter towns...

 situated 8 miles outside of the city. After bypassing Comber town itself, the route continues along the eastern shores of, though not directly adjacent to, Strangford Lough

Strangford Lough

Strangford Lough, sometimes Strangford Loch, is a large sea loch or inlet in County Down, Northern Ireland. It is separated from the Irish Sea by the Ards Peninsula. The name Strangford is derived ; describing the fast-flowing narrows at its mouth...

. The route passes through Lisbane, Balloo

Balloo, County Down

Balloo is a small village and townland near Killinchy in County Down, Northern Ireland. It is 5 miles south of Comber on the A22 road to Downpatrick. In the 2001 Census it had a population of 159 people...

 (near Killinchy), and Killyleagh

Killyleagh

Killyleagh is a village in County Down, Northern Ireland. It is on the A22 road from Downpatrick, on the western side of Strangford Lough. It had a population of 2,483 people in the 2001 Census. It is best known for its 12th century Killyleagh Castle...

, terminating in Downpatrick

Downpatrick

Downpatrick is a medium-sized town about 33 km south of Belfast in County Down, Northern Ireland. It is the county town of Down with a rich history and strong connection to Saint Patrick. It had a population of 10,316 at the 2001 Census...

.