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