Geography thumb|Cameron Highlands. Pahang covers an area of , and is the third largest state in Malaysia after Sabah and Sarawak, and the largest in Peninsular Malaysia. Geographically diverse, Pahang occupies the vast Pahang River basin, which is enclosed by the Titiwangsa Range to the west and the eastern highlands to the north. Although about two thirds of the state is dense jungle, its central plains are intersected by numerous rivers, joining to form the Pahang River which dominates the drainage system. Pahang is divided into three ecoregions, the freshwater systems, the lowlands and highlands rainforests and the coastline.
Geography thumb|Cameron Highlands. Pahang covers an area of , and is the third largest state in Malaysia after Sabah and Sarawak, and the largest in Peninsular Malaysia. Geographically diverse, Pahang occupies the vast Pahang River basin, which is enclosed by the Titiwangsa Range to the west and the eastern highlands to the north. Although about two thirds of the state is dense jungle, its central plains are intersected by numerous rivers, joining to form the Pahang River which dominates the drainage system. Pahang is divided into three ecoregions, the freshwater systems, the lowlands and highlands rainforests and the coastline.