The calculated distance (air line) between Balchik and Gorna Oryahovitsa is approximately 125 miles respectively 202 kilometers.
By car or train, the actual journey to Gorna Oryahovitsa is certainly longer, as only the direct route (as the crow flies) between Balchik and Gorna Oryahovitsa has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles