The calculated distance (air line) between Bayt Kāḩil and Ramallah is approximately 24 miles respectively 39 kilometers.
By car or train, the actual journey to Ramallah is certainly longer, as only the direct route (as the crow flies) between Bayt Kāḩil and Ramallah has been calculated here.
Air line (approximately)
39 kilometers
21 nautical miles