The calculated distance (air line) between Sirajganj and Shāhzādpur is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Shāhzādpur is certainly longer, as only the direct route (as the crow flies) between Sirajganj and Shāhzādpur has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles