The calculated distance (air line) between Duque de Caxias and Itaboraí is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Itaboraí is certainly longer, as only the direct route (as the crow flies) between Duque de Caxias and Itaboraí has been calculated here.
Air line (approximately)
47 kilometers
25 nautical miles