The calculated distance (air line) between Dulovo and Gorna Oryahovitsa is approximately 87 miles respectively 140 kilometers.
By car or train, the actual journey to Gorna Oryahovitsa is certainly longer, as only the direct route (as the crow flies) between Dulovo and Gorna Oryahovitsa has been calculated here.
Air line (approximately)
140 kilometers
75 nautical miles