The calculated distance (air line) between Vila Franca de Xira and Rio de Mouro is approximately 22 miles respectively 36 kilometers.
By car or train, the actual journey to Rio de Mouro is certainly longer, as only the direct route (as the crow flies) between Vila Franca de Xira and Rio de Mouro has been calculated here.
Air line (approximately)
36 kilometers
19 nautical miles