For all cities with a population greater than one hundred thousand, Porto is closest to Vigo and farthest from Wellington. The closest foreign city is Vigo and the farthest domestic city is Lisbon. See below for the top 5 closest and farthest cities (domestically, internationally and by continent) and to see which cities, if any, Porto is the closest and farthest to. Filter to include all cities over 100k, 500k or 1 million in population.