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