The Spantik-Sosbun Mountains are about long, going mostly east–west. The northern border is the Hispar and Biafo Glaciers. On the southwest, the Barpu Glacier and the Chogo Lungma Glacier separate these mountains from the Rakaposhi-Haramosh Mountains. On the southeast, the Braldu River is the border between this subrange and the Mango Gusor Mountains.