The calculated distance (air line) between Slovenska Bistrica and Slovenj Gradec is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to Slovenj Gradec is certainly longer, as only the direct route (as the crow flies) between Slovenska Bistrica and Slovenj Gradec has been calculated here.
Air line (approximately)
40 kilometers
22 nautical miles