The calculated distance (air line) between Ḩizmā and Banī Suhaylā is approximately 65 miles respectively 104 kilometers.
By car or train, the actual journey to Banī Suhaylā is certainly longer, as only the direct route (as the crow flies) between Ḩizmā and Banī Suhaylā has been calculated here.
Air line (approximately)
104 kilometers
56 nautical miles