The calculated distance (air line) between Samtse and Wangdue Phodrang is approximately 64 miles respectively 103 kilometers.
By car or train, the actual journey to Wangdue Phodrang is certainly longer, as only the direct route (as the crow flies) between Samtse and Wangdue Phodrang has been calculated here.
Air line (approximately)
103 kilometers
55 nautical miles