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