The calculated distance (air line) between Iguaba Grande and Duque de Caxias is approximately 69 miles respectively 111 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 Iguaba Grande and Duque de Caxias has been calculated here.
Air line (approximately)
111 kilometers
60 nautical miles