The calculated distance (air line) between Azkoitia and Aretxabaleta is approximately 14 miles respectively 22 kilometers.
By car or train, the actual journey to Aretxabaleta is certainly longer, as only the direct route (as the crow flies) between Azkoitia and Aretxabaleta has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles