The calculated distance (air line) between Alto Caparaó and Duque de Caxias is approximately 186 miles respectively 300 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 Alto Caparaó and Duque de Caxias has been calculated here.
Air line (approximately)
300 kilometers
162 nautical miles