The Titiwangsa mountain range begins in the north as the Sankalakhiri Range, a prolongation of the Nakhon Si Thammarat Range which includes the smaller Pattani, Taluban, and Songkhla sub-ranges. The main range runs approximately from northwest to southeast across the border into Malaysia and ends in the south near Jelebu, Negeri Sembilan, Malaysia. Foothills extend further southeastwards into Melaka and Johor with its terminus at Mount Pulai.