The calculated distance (air line) between Al Musayyib and Imam Qasim is approximately 40 miles respectively 65 kilometers.
By car or train, the actual journey to Imam Qasim is certainly longer, as only the direct route (as the crow flies) between Al Musayyib and Imam Qasim has been calculated here.
Air line (approximately)
65 kilometers
35 nautical miles