The calculated distance (air line) between Biritiba Mirim and Duque de Caxias is approximately 182 miles respectively 292 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 Biritiba Mirim and Duque de Caxias has been calculated here.
Air line (approximately)
292 kilometers
158 nautical miles