The calculated distance (air line) between Ḩajjah and Al Ḩudaydah is approximately 76 miles respectively 122 kilometers.
By car or train, the actual journey to Al Ḩudaydah is certainly longer, as only the direct route (as the crow flies) between Ḩajjah and Al Ḩudaydah has been calculated here.
Air line (approximately)
122 kilometers
66 nautical miles