The calculated distance (air line) between Mirna Peč and Zagorje ob Savi is approximately 19 miles respectively 31 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 Mirna Peč and Zagorje ob Savi has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles