The calculated distance (air line) between Tulsi̇̄pur and Hetauda is approximately 174 miles respectively 280 kilometers.
By car or train, the actual journey to Hetauda is certainly longer, as only the direct route (as the crow flies) between Tulsi̇̄pur and Hetauda has been calculated here.
Air line (approximately)
280 kilometers
151 nautical miles