The calculated distance (air line) between Gongdanglegi Kulon and Jepara is approximately 173 miles respectively 279 kilometers.
By car or train, the actual journey to Jepara is certainly longer, as only the direct route (as the crow flies) between Gongdanglegi Kulon and Jepara has been calculated here.
Air line (approximately)
279 kilometers
151 nautical miles