The calculated distance (air line) between Sānkrāil and Madhyamgram is approximately 17 miles respectively 27 kilometers.
By car or train, the actual journey to Madhyamgram is certainly longer, as only the direct route (as the crow flies) between Sānkrāil and Madhyamgram has been calculated here.
Air line (approximately)
27 kilometers
15 nautical miles