The calculated distance (air line) between Ḩadīthah and Al Mayādīn is approximately 125 miles respectively 202 kilometers.
By car or train, the actual journey to Al Mayādīn is certainly longer, as only the direct route (as the crow flies) between Ḩadīthah and Al Mayādīn has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles