The calculated distance (air line) between Dobrna and Ravne na Koroškem is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Ravne na Koroškem is certainly longer, as only the direct route (as the crow flies) between Dobrna and Ravne na Koroškem has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles