The calculated distance (air line) between Sīdī Sālim and Bilqās is approximately 34 miles respectively 55 kilometers.
By car or train, the actual journey to Bilqās is certainly longer, as only the direct route (as the crow flies) between Sīdī Sālim and Bilqās has been calculated here.
Air line (approximately)
55 kilometers
30 nautical miles