The calculated distance (air line) between Dayr Dibwān and Qalqīlyah is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Qalqīlyah is certainly longer, as only the direct route (as the crow flies) between Dayr Dibwān and Qalqīlyah has been calculated here.
Air line (approximately)
42 kilometers
22 nautical miles