I will be arriving with train from Dublin next week, and wonder how to get from Belfast Central (railway station) to the city center, using public transportation if needed?
A transfer from the railway station to the city center is included in your railway ticket from Dublin, so you can jump on any bus going from the city center of Belfast outside the railway station and travel with this. It is not really a distance, so with bus it takes 2 minutes, on foot it takes 10 minutes. Most important is to walk to the left as you get out of the railway station, follow the main road and after a while you will get to the City Hall… and then you are there, in the centre of Belfast.