The calculated distance (air line) between Al Musayyib and Ad Dīwānīyah is approximately 66 miles respectively 106 kilometers.
By car or train, the actual journey to Ad Dīwānīyah is certainly longer, as only the direct route (as the crow flies) between Al Musayyib and Ad Dīwānīyah has been calculated here.
Air line (approximately)
106 kilometers
57 nautical miles