The calculated distance (air line) between Al Ḩayy and Al Musayyib is approximately 110 miles respectively 178 kilometers.
By car or train, the actual journey to Al Musayyib is certainly longer, as only the direct route (as the crow flies) between Al Ḩayy and Al Musayyib has been calculated here.
Air line (approximately)
178 kilometers
96 nautical miles