Pinamalayan having a total land area of 28,266 hectares,is located at the center of Oriental Mindoro. It is around 118 km from Puerto Galera, the northernmost town of the province; 68 km from Calapan City, the capital of Oriental Mindoro and its major entrance point from Manila;around 56 km from the town of Roxas, entrance point from the Philippines southern provinces and 120 km from Bulalacao, Oriental Mindoro southernmost town.
The town of Pinamalayan is bounded in the north by the towns of Socorro and Pola; in the west by the Province of Occidental Mindoro; in the south by the Town of Gloria and in the east by Tablas Strait. National and provincial road networks connect Pinamalayan with other local government units. Tablas Strait separates Pinamalayan from the island-province of Marinduque and the island-towns of Concepcion and Bantuin, Romblon but all are accessible by passenger boats plying the routes daily.