Larino is a town and comune of approximately 8,100 inhabitants in Molise, province of Campobasso, southern Italy. It is located in the fertile vall…Larino is a town and comune of approximately 8,100 inhabitants in Molise, province of Campobasso, southern Italy. It is located in the fertile valley of the Biferno River. The old town, seen from the mountains, is shaped like a bird's wing. The new town, called Piano San Leonardo, is built on a mountainside.