The calculated distance (air line) between Turčianske Teplice and Lučenec is approximately 52 miles respectively 84 kilometers.
By car or train, the actual journey to Lučenec is certainly longer, as only the direct route (as the crow flies) between Turčianske Teplice and Lučenec has been calculated here.
Air line (approximately)
84 kilometers
45 nautical miles