The calculated distance (air line) between Kavarna and Veliko Tŭrnovo is approximately 139 miles respectively 223 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Kavarna and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
223 kilometers
120 nautical miles