For all cities with a population greater than one million, Erbil is closest to Mosul and farthest from Auckland. The closest foreign city is Al-Hasakeh and the farthest domestic city is Basra. See below for the top 5 closest and farthest cities (domestically, internationally and by continent) and to see which cities, if any, Erbil is the closest and farthest to. Filter to include all cities over 100k, 500k or 1 million in population.