The calculated distance (air line) between Trashi Yangtse and Rangāpāra is approximately 90 miles respectively 144 kilometers.
By car or train, the actual journey to Rangāpāra is certainly longer, as only the direct route (as the crow flies) between Trashi Yangtse and Rangāpāra has been calculated here.
Air line (approximately)
144 kilometers
78 nautical miles