The calculated distance (air line) between Belo Horizonte and Barra do Piraí is approximately 176 miles respectively 284 kilometers.
By car or train, the actual journey to Barra do Piraí is certainly longer, as only the direct route (as the crow flies) between Belo Horizonte and Barra do Piraí has been calculated here.
Air line (approximately)
284 kilometers
153 nautical miles