The calculated distance (air line) between Aretxabaleta and Fuencarral-El Pardo is approximately 186 miles respectively 300 kilometers.
By car or train, the actual journey to Fuencarral-El Pardo is certainly longer, as only the direct route (as the crow flies) between Aretxabaleta and Fuencarral-El Pardo has been calculated here.
Air line (approximately)
300 kilometers
162 nautical miles