The calculated distance (air line) between Abū Ghurayb and Ḩalabja is approximately 165 miles respectively 266 kilometers.
By car or train, the actual journey to Ḩalabja is certainly longer, as only the direct route (as the crow flies) between Abū Ghurayb and Ḩalabja has been calculated here.
Air line (approximately)
266 kilometers
144 nautical miles