The calculated distance (air line) between Črna na Koroškem and Slovenj Gradec is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Slovenj Gradec is certainly longer, as only the direct route (as the crow flies) between Črna na Koroškem and Slovenj Gradec has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles