The calculated distance (air line) between Shemgang and Wangdue Phodrang is approximately 50 miles respectively 81 kilometers.
By car or train, the actual journey to Wangdue Phodrang is certainly longer, as only the direct route (as the crow flies) between Shemgang and Wangdue Phodrang has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles