The calculated distance (air line) between Madīnat ash Shamāl and Musay‘īd is approximately 82 miles respectively 131 kilometers.
By car or train, the actual journey to Musay‘īd is certainly longer, as only the direct route (as the crow flies) between Madīnat ash Shamāl and Musay‘īd has been calculated here.
Air line (approximately)
131 kilometers
71 nautical miles