The calculated distance (air line) between Bayt Lāhyā and Ḩalḩūl is approximately 36 miles respectively 58 kilometers.
By car or train, the actual journey to Ḩalḩūl is certainly longer, as only the direct route (as the crow flies) between Bayt Lāhyā and Ḩalḩūl has been calculated here.
Air line (approximately)
58 kilometers
31 nautical miles