The calculated distance (air line) between Ljubno ob Savinji and Trbovlje is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Trbovlje is certainly longer, as only the direct route (as the crow flies) between Ljubno ob Savinji and Trbovlje has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles