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