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