The calculated distance (air line) between Ludhiāna and Tarn Tāran is approximately 66 miles respectively 107 kilometers.
By car or train, the actual journey to Tarn Tāran is certainly longer, as only the direct route (as the crow flies) between Ludhiāna and Tarn Tāran has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles