The calculated distance (air line) between Sv. Trojica v Slov. Goricah and Slovenska Bistrica is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Slovenska Bistrica is certainly longer, as only the direct route (as the crow flies) between Sv. Trojica v Slov. Goricah and Slovenska Bistrica has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles