The calculated distance (air line) between Tryavna and Veliko Tŭrnovo is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Tryavna and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles