The calculated distance (air line) between Ar Rām wa Ḑāḩiyat al Barīd and Ḩalḩūl is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Ḩalḩūl is certainly longer, as only the direct route (as the crow flies) between Ar Rām wa Ḑāḩiyat al Barīd and Ḩalḩūl has been calculated here.
Air line (approximately)
32 kilometers
18 nautical miles