The calculated distance (air line) between Ḩalḩūl and Bayt Ḩānūn is approximately 33 miles respectively 54 kilometers.
By car or train, the actual journey to Bayt Ḩānūn is certainly longer, as only the direct route (as the crow flies) between Ḩalḩūl and Bayt Ḩānūn has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles