The calculated distance (air line) between Rājshāhi and Murshidābād is approximately 25 miles respectively 40 kilometers.
By car or train, the actual journey to Murshidābād is certainly longer, as only the direct route (as the crow flies) between Rājshāhi and Murshidābād has been calculated here.
Air line (approximately)
40 kilometers
21 nautical miles