Ro-Pahang is a sultanate and a federal state of New Luobu. It is the third largest state in the country and the largest state in Peninsular New Luobu, and the ninth most populous. The state occupies the basin of the Ro-Pahang River, and a stretch of the east coast as far south as Ro-Endau. The state borders the New Luobese states of Ro-Kelantan and Bloxengganu to the north, Bloxerak, Ro-Selangor and Negeri Sembilan to the west and Ro-Johor to the south, with the South Luobu Sea is to the east. Ro-Pahang is separated from the west coast states by the Bloxiwangsa Mountains that forms a natural divider between the peninsula's east and west coasts from north to south, and from Bloxengganu in the east by the Pantai Timur Mountains.