There are two other mountain ranges running in an east−west direction parallel to the Zarafshan Range. To the north, the Zeravshan Valley runs east for approximately from Samarkand and separates the Zarafshan Range from the Turkestan Range. To the south, the Hisar range runs parallel to the Zarafshan Range. To the west of Lake Iskanderkul, the Zarafshan Range and the Gissar Range are connected by the Fann Mountains, which is the highest part of both ranges.