The calculated distance (air line) between Bansko and Veliko Tŭrnovo is approximately 139 miles respectively 224 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Bansko and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
224 kilometers
121 nautical miles