The calculated distance (air line) between Bayt Lāhyā and Ramallah is approximately 48 miles respectively 78 kilometers.
By car or train, the actual journey to Ramallah is certainly longer, as only the direct route (as the crow flies) between Bayt Lāhyā and Ramallah has been calculated here.
Air line (approximately)
78 kilometers
42 nautical miles