The calculated distance (air line) between Az Zaytūnīyah and Jabālyā is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Jabālyā is certainly longer, as only the direct route (as the crow flies) between Az Zaytūnīyah and Jabālyā has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles