The calculated distance (air line) between Dobje pri Planini and Slovenj Gradec is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Slovenj Gradec is certainly longer, as only the direct route (as the crow flies) between Dobje pri Planini and Slovenj Gradec has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles