The calculated distance (air line) between Talcahuano and Padre Las Casas is approximately 144 miles respectively 231 kilometers.
By car or train, the actual journey to Padre Las Casas is certainly longer, as only the direct route (as the crow flies) between Talcahuano and Padre Las Casas has been calculated here.
Air line (approximately)
231 kilometers
125 nautical miles