Arinos is a municipality in northern Minas Gerais state in Brazil. Arinos is located east of the Federal District on the Urucuia River, a major tribu…Arinos is a municipality in northern Minas Gerais state in Brazil. Arinos is located east of the Federal District on the Urucuia River, a major tributary of the São Francisco. The city is 333 km from Brasília.