The calculated distance (air line) between Perushtitsa and Veliko Tŭrnovo is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Veliko Tŭrnovo is certainly longer, as only the direct route (as the crow flies) between Perushtitsa and Veliko Tŭrnovo has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles