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