Mara is a comune in the Province of Sassari in the Italian region Sardinia, located about 140 kilometres northwest of Cagliari and about 35 kilo…Mara is a comune in the Province of Sassari in the Italian region Sardinia, located about 140 kilometres northwest of Cagliari and about 35 kilometres south of Sassari. Mara borders the following municipalities: Cossoine, Padria, Pozzomaggiore.