The calculated distance (air line) between Rio Bonito and Duque de Caxias is approximately 45 miles respectively 72 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 Rio Bonito and Duque de Caxias has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles