The calculated distance (air line) between Bayt Kāḩil and Qalqīlyah is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Qalqīlyah is certainly longer, as only the direct route (as the crow flies) between Bayt Kāḩil and Qalqīlyah has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles