The calculated distance (air line) between Bayt Kāḩil and Janīn is approximately 63 miles respectively 101 kilometers.
By car or train, the actual journey to Janīn is certainly longer, as only the direct route (as the crow flies) between Bayt Kāḩil and Janīn has been calculated here.
Air line (approximately)
101 kilometers
55 nautical miles