The calculated distance (air line) between Sv. Trojica v Slov. Goricah and Ljubljana is approximately 75 miles respectively 120 kilometers.
By car or train, the actual journey to Ljubljana is certainly longer, as only the direct route (as the crow flies) between Sv. Trojica v Slov. Goricah and Ljubljana has been calculated here.
Air line (approximately)
120 kilometers
65 nautical miles