(2005)Its geography consists of a ring of mountains surrounding a central plain Trikala and Larissa lowlands. It has a distinct summer and winter season, with summer rains augmenting the fertility of the plains. This has led to Thessaly occasionally being called the breadbasket of Greece.
The region is well delineated by topographical boundaries. The Khásia and Cambunian mountains lie to the north, the mount Olympus massif to the northeast. To the west lies the Pindus mountain range, to the southeast the coastal ranges of Óssa and Pelion.
Several tributaries of the Pineios river flow through the region.
