The calculated distance (air line) between Türkmenabat and Nishon Tumani is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Nishon Tumani is certainly longer, as only the direct route (as the crow flies) between Türkmenabat and Nishon Tumani has been calculated here.
Air line (approximately)
186 kilometers
101 nautical miles