The calculated distance (air line) between Blagoevgrad and Veliko Tŭrnovo is approximately 148 miles respectively 239 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Blagoevgrad and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
239 kilometers
129 nautical miles