The calculated distance (air line) between Itabirito and Duque de Caxias is approximately 178 miles respectively 286 kilometers.
By car or train, the actual journey to Duque de Caxias is certainly longer, as only the direct route (as the crow flies) between Itabirito and Duque de Caxias has been calculated here.
Air line (approximately)
286 kilometers
154 nautical miles