The calculated distance (air line) between Casimiro de Abreu and Duque de Caxias is approximately 74 miles respectively 119 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 Casimiro de Abreu and Duque de Caxias has been calculated here.
Air line (approximately)
119 kilometers
64 nautical miles