The calculated distance (air line) between Grad and Šentilj v Slov. Goricah is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Šentilj v Slov. Goricah is certainly longer, as only the direct route (as the crow flies) between Grad and Šentilj v Slov. Goricah has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles