The calculated distance (air line) between Balāţah and Dayr al Balaḩ is approximately 78 miles respectively 125 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 Balāţah and Dayr al Balaḩ has been calculated here.
Air line (approximately)
125 kilometers
67 nautical miles