The calculated distance (air line) between Kozloduy and Veliko Tŭrnovo is approximately 107 miles respectively 173 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Kozloduy and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
173 kilometers
93 nautical miles