The calculated distance (air line) between Karlovac and Tržačka Raštela is approximately 37 miles respectively 60 kilometers.
By car or train, the actual journey to Tržačka Raštela is certainly longer, as only the direct route (as the crow flies) between Karlovac and Tržačka Raštela has been calculated here.
Air line (approximately)
60 kilometers
32 nautical miles