The calculated distance (air line) between Maulavi Bāzār and Chhātak is approximately 39 miles respectively 62 kilometers.
By car or train, the actual journey to Chhātak is certainly longer, as only the direct route (as the crow flies) between Maulavi Bāzār and Chhātak has been calculated here.
Air line (approximately)
62 kilometers
33 nautical miles