The calculated distance (air line) between Dayr al Ghuşūn and Bayt Lāhyā is approximately 65 miles respectively 105 kilometers.
By car or train, the actual journey to Bayt Lāhyā is certainly longer, as only the direct route (as the crow flies) between Dayr al Ghuşūn and Bayt Lāhyā has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles