The calculated distance (air line) between Žalec and Šentilj v Slov. Goricah is approximately 38 miles respectively 60 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 Žalec and Šentilj v Slov. Goricah has been calculated here.
Air line (approximately)
60 kilometers
33 nautical miles