The calculated distance (air line) between Nova Iguaçu and Barra Mansa is approximately 48 miles respectively 78 kilometers.
By car or train, the actual journey to Barra Mansa is certainly longer, as only the direct route (as the crow flies) between Nova Iguaçu and Barra Mansa has been calculated here.
Air line (approximately)
78 kilometers
42 nautical miles