The calculated distance (air line) between Hebron and Bayt Lāhyā is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Bayt Lāhyā is certainly longer, as only the direct route (as the crow flies) between Hebron and Bayt Lāhyā has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles