The calculated distance (air line) between Sylhet and Bhairab Bāzār is approximately 81 miles respectively 131 kilometers.
By car or train, the actual journey to Bhairab Bāzār is certainly longer, as only the direct route (as the crow flies) between Sylhet and Bhairab Bāzār has been calculated here.
Air line (approximately)
131 kilometers
71 nautical miles