The calculated distance (air line) between Belo Horizonte and Ouro Branco is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Ouro Branco is certainly longer, as only the direct route (as the crow flies) between Belo Horizonte and Ouro Branco has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles