The calculated distance (air line) between Nova Zagora and Veliko Tŭrnovo is approximately 46 miles respectively 74 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Nova Zagora and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
74 kilometers
40 nautical miles