R-36M (SS-18 Satan), Russia - 16,000km. The R-36M (SS-18 Satan) is the world's longest range Intercontinental Ballistic Missile (ICBM) with a range of 16,000km. With a weight of 8.8t the R-36M is also the heaviest ICBM in the world. The R-36M has been built in different versions ranging from Mod 1 to Mod 6.