The calculated distance (air line) between Montemor-o-Novo and Corroios is approximately 51 miles respectively 81 kilometers.
By car or train, the actual journey to Corroios is certainly longer, as only the direct route (as the crow flies) between Montemor-o-Novo and Corroios has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles