That depends on your routine. Someone living off the Lisburn Road may happily meet a match from Holywood after work, but think twice about Carrickfergus if neither person drives. A Bangor commuter might find the city centre easier than west Belfast, even though the map suggests otherwise.
Our idea of dating in Belfast covers the city itself and the places that genuinely connect to it: Lisburn, Newtownabbey, Holywood, Bangor and Carrickfergus. It also recognises that County Antrim is not shorthand for Belfast, and that Bangor is in County Down. Those distinctions affect travel, identity and whether a spontaneous meeting is actually possible.
A useful rule: do not judge distance in miles. Judge it by the journey you would make after work, in rain, when the last train matters.When viewing Belfast singles, look beyond the broad location label. Ask which part of town they are in, whether they commute and how they normally travel. You do not need a street address. A general area gives both people enough information to work out whether meeting regularly would be realistic.