The calculated distance (air line) between Velenje and Zagorje ob Savi is approximately 17 miles respectively 27 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 Velenje and Zagorje ob Savi has been calculated here.
Air line (approximately)
27 kilometers
14 nautical miles