The calculated distance (air line) between Paço de Arcos and Santo António dos Olivais is approximately 115 miles respectively 186 kilometers.
By car or train, the actual journey to Santo António dos Olivais is certainly longer, as only the direct route (as the crow flies) between Paço de Arcos and Santo António dos Olivais has been calculated here.
Air line (approximately)
186 kilometers
100 nautical miles