The calculated distance (air line) between Ar Raqqah and Al Mayādīn is approximately 104 miles respectively 167 kilometers.
By car or train, the actual journey to Al Mayādīn is certainly longer, as only the direct route (as the crow flies) between Ar Raqqah and Al Mayādīn has been calculated here.
Air line (approximately)
167 kilometers
90 nautical miles