The calculated distance (air line) between 6th of October City and Ḩalwān is approximately 15 miles respectively 24 kilometers.
By car or train, the actual journey to Ḩalwān is certainly longer, as only the direct route (as the crow flies) between 6th of October City and Ḩalwān has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles