The calculated distance (air line) between Wangdue Phodrang and Samdrup Jongkhar is approximately 110 miles respectively 176 kilometers.
By car or train, the actual journey to Samdrup Jongkhar is certainly longer, as only the direct route (as the crow flies) between Wangdue Phodrang and Samdrup Jongkhar has been calculated here.
Air line (approximately)
176 kilometers
95 nautical miles