The calculated distance (air line) between Hebron and Dayr al Balaḩ is approximately 45 miles respectively 72 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 Hebron and Dayr al Balaḩ has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles