The calculated distance (air line) between Uttar Char Fasson and Tāngāil is approximately 149 miles respectively 239 kilometers.
By car or train, the actual journey to Tāngāil is certainly longer, as only the direct route (as the crow flies) between Uttar Char Fasson and Tāngāil has been calculated here.
Air line (approximately)
239 kilometers
129 nautical miles