The calculated distance (air line) between Duque de Caxias and Cachoeiras de Macacu is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Cachoeiras de Macacu is certainly longer, as only the direct route (as the crow flies) between Duque de Caxias and Cachoeiras de Macacu has been calculated here.
Air line (approximately)
77 kilometers
41 nautical miles