The calculated distance (air line) between Póvoa de Santo Adrião and Rio Tinto is approximately 167 miles respectively 270 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 Santo Adrião and Rio Tinto has been calculated here.
Air line (approximately)
270 kilometers
145 nautical miles