The calculated distance (air line) between Nāḩiyat ash Shināfīyah and Kufa is approximately 35 miles respectively 56 kilometers.
By car or train, the actual journey to Kufa is certainly longer, as only the direct route (as the crow flies) between Nāḩiyat ash Shināfīyah and Kufa has been calculated here.
Air line (approximately)
56 kilometers
30 nautical miles