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