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