The calculated distance (air line) between Šmarje pri Jelšah and Nova Gorica is approximately 92 miles respectively 147 kilometers.
By car or train, the actual journey to Nova Gorica is certainly longer, as only the direct route (as the crow flies) between Šmarje pri Jelšah and Nova Gorica has been calculated here.
Air line (approximately)
147 kilometers
80 nautical miles