The calculated distance (air line) between Bayt Lāhyā and Banī Na‘īm is approximately 39 miles respectively 64 kilometers.
By car or train, the actual journey to Banī Na‘īm is certainly longer, as only the direct route (as the crow flies) between Bayt Lāhyā and Banī Na‘īm has been calculated here.
Air line (approximately)
64 kilometers
34 nautical miles