The calculated distance (air line) between Lviv and Tomaszów Lubelski is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Tomaszów Lubelski is certainly longer, as only the direct route (as the crow flies) between Lviv and Tomaszów Lubelski has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles