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