The calculated distance (air line) between Trashi Yangtse and Samdrup Jongkhar is approximately 56 miles respectively 90 kilometers.
By car or train, the actual journey to Samdrup Jongkhar is certainly longer, as only the direct route (as the crow flies) between Trashi Yangtse and Samdrup Jongkhar has been calculated here.
Air line (approximately)
90 kilometers
49 nautical miles