The calculated distance (air line) between Zgornje Jezersko and Kočevje is approximately 55 miles respectively 88 kilometers.
By car or train, the actual journey to Kočevje is certainly longer, as only the direct route (as the crow flies) between Zgornje Jezersko and Kočevje has been calculated here.
Air line (approximately)
88 kilometers
47 nautical miles