The calculated distance (air line) between Kyustendil and Gorna Oryahovitsa is approximately 164 miles respectively 263 kilometers.
By car or train, the actual journey to Gorna Oryahovitsa is certainly longer, as only the direct route (as the crow flies) between Kyustendil and Gorna Oryahovitsa has been calculated here.
Air line (approximately)
263 kilometers
142 nautical miles