The calculated distance (air line) between Qaşr Bin Ghashīr and Şurmān is approximately 36 miles respectively 58 kilometers.
By car or train, the actual journey to Şurmān is certainly longer, as only the direct route (as the crow flies) between Qaşr Bin Ghashīr and Şurmān has been calculated here.
Air line (approximately)
58 kilometers
31 nautical miles