The calculated distance (air line) between Dayr al Balaḩ and Bayt Ḩānūn is approximately 14 miles respectively 22 kilometers.
By car or train, the actual journey to Bayt Ḩānūn is certainly longer, as only the direct route (as the crow flies) between Dayr al Balaḩ and Bayt Ḩānūn has been calculated here.
Air line (approximately)
22 kilometers
12 nautical miles