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