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