The calculated distance (air line) between Metlika and Zagorje ob Savi is approximately 37 miles respectively 59 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 Metlika and Zagorje ob Savi has been calculated here.
Air line (approximately)
59 kilometers
32 nautical miles