The calculated distance (air line) between Aţ Ţafīlah and Saḩāb is approximately 75 miles respectively 121 kilometers.
By car or train, the actual journey to Saḩāb is certainly longer, as only the direct route (as the crow flies) between Aţ Ţafīlah and Saḩāb has been calculated here.
Air line (approximately)
121 kilometers
65 nautical miles