Radiated Tortoises are found in the dry spiny forests of southern and southwestern Madagascar, from the area of Amboasary in the south across the Karimbola and Mahafaly plateaus north of Tuléar (where the habitat is highly fragmented and tortoises may be close to extinction) to Morombe. They are usually found in a narrow band within about 50 to 100 km from the coast (Glaw and Vences 1994, Leuteritz et al. 2005). Is sympatric with Pyxis arachnoides. The species' core range compries about 10,000 square km.