The calculated distance (air line) between At Tall al Kabīr and Ḩalwān is approximately 56 miles respectively 91 kilometers.
By car or train, the actual journey to Ḩalwān is certainly longer, as only the direct route (as the crow flies) between At Tall al Kabīr and Ḩalwān has been calculated here.
Air line (approximately)
91 kilometers
49 nautical miles