The calculated distance (air line) between Baytūnyā and Dayr al Balaḩ is approximately 59 miles respectively 94 kilometers.
By car or train, the actual journey to Dayr al Balaḩ is certainly longer, as only the direct route (as the crow flies) between Baytūnyā and Dayr al Balaḩ has been calculated here.
Air line (approximately)
94 kilometers
51 nautical miles