The calculated distance (air line) between Castanheira do Ribatejo and Santo António dos Olivais is approximately 90 miles respectively 145 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 Castanheira do Ribatejo and Santo António dos Olivais has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles