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