The calculated distance (air line) between East Jerusalem and Dayr al Balaḩ is approximately 58 miles respectively 93 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 East Jerusalem and Dayr al Balaḩ has been calculated here.
Air line (approximately)
93 kilometers
50 nautical miles