The calculated distance (air line) between Manikchari and Uttar Char Fasson is approximately 84 miles respectively 134 kilometers.
By car or train, the actual journey to Uttar Char Fasson is certainly longer, as only the direct route (as the crow flies) between Manikchari and Uttar Char Fasson has been calculated here.
Air line (approximately)
134 kilometers
73 nautical miles