The calculated distance (air line) between Fazendas de Almeirim and Sesimbra is approximately 58 miles respectively 93 kilometers.
By car or train, the actual journey to Sesimbra is certainly longer, as only the direct route (as the crow flies) between Fazendas de Almeirim and Sesimbra has been calculated here.
Air line (approximately)
93 kilometers
50 nautical miles