The vineyards spread over about 425 square kilometers at elevations between 200 and 430 m above sea level, on a range of rugged hillsides and high slopes.
The average rainfall is relatively low, with extremes in the northern part of the territory, which does not exceed 570 mm per year; this, along with a steady wind from the north-west flying over the area, has heavy influences on the advance of phenological stages and fruit ripening.
The vineyard area of the territory corresponds to 2350 hectares, planted
mainly with Arneis, Nebbiolo, Barbera and Brachetto, whose total production exceeds 13 million bottles.
Roero occupies the north-eastern part of the province of Cuneo, between the left side of the river Tanaro and the provincial borders of Asti and Turin eastward and northward.