The calculated distance (air line) between Beit El and Bayt Ḩānūn is approximately 49 miles respectively 79 kilometers.
By car or train, the actual journey to Bayt Ḩānūn is certainly longer, as only the direct route (as the crow flies) between Beit El and Bayt Ḩānūn has been calculated here.
Air line (approximately)
79 kilometers
43 nautical miles