The calculated distance (air line) between Tsimasham and Trashi Yangtse is approximately 126 miles respectively 202 kilometers.
By car or train, the actual journey to Trashi Yangtse is certainly longer, as only the direct route (as the crow flies) between Tsimasham and Trashi Yangtse has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles