The calculated distance (air line) between Kanpur and Fatehpur Chaurāsi is approximately 23 miles respectively 37 kilometers.
By car or train, the actual journey to Fatehpur Chaurāsi is certainly longer, as only the direct route (as the crow flies) between Kanpur and Fatehpur Chaurāsi has been calculated here.
Air line (approximately)
37 kilometers
20 nautical miles