The calculated distance (air line) between Póvoa de Lanhoso and Rio Tinto is approximately 31 miles respectively 50 kilometers.
By car or train, the actual journey to Rio Tinto is certainly longer, as only the direct route (as the crow flies) between Póvoa de Lanhoso and Rio Tinto has been calculated here.
Air line (approximately)
50 kilometers
27 nautical miles