The calculated distance (air line) between Peso da Régua and Figueira da Foz is approximately 90 miles respectively 144 kilometers.
By car or train, the actual journey to Figueira da Foz is certainly longer, as only the direct route (as the crow flies) between Peso da Régua and Figueira da Foz has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles