The calculated distance (air line) between Ptuj and Zagorje ob Savi is approximately 46 miles respectively 74 kilometers.
By car or train, the actual journey to Zagorje ob Savi is certainly longer, as only the direct route (as the crow flies) between Ptuj and Zagorje ob Savi has been calculated here.
Air line (approximately)
74 kilometers
40 nautical miles