The calculated distance (air line) between Fazendas de Almeirim and Barreiro is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Barreiro is certainly longer, as only the direct route (as the crow flies) between Fazendas de Almeirim and Barreiro has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles