The calculated distance (air line) between Bayt Lāhyā and Qalqīlyah is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to Qalqīlyah is certainly longer, as only the direct route (as the crow flies) between Bayt Lāhyā and Qalqīlyah has been calculated here.
Air line (approximately)
84 kilometers
46 nautical miles