The calculated distance (air line) between La Pobla de Farnals and Cartagena is approximately 141 miles respectively 227 kilometers.
By car or train, the actual journey to Cartagena is certainly longer, as only the direct route (as the crow flies) between La Pobla de Farnals and Cartagena has been calculated here.
Air line (approximately)
227 kilometers
122 nautical miles