The calculated distance (air line) between Sv. Trojica v Slov. Goricah and Ajdovščina is approximately 105 miles respectively 170 kilometers.
By car or train, the actual journey to Ajdovščina is certainly longer, as only the direct route (as the crow flies) between Sv. Trojica v Slov. Goricah and Ajdovščina has been calculated here.
Air line (approximately)
170 kilometers
92 nautical miles