The calculated distance (air line) between Ar Raqqah and Deir ez-Zor is approximately 77 miles respectively 123 kilometers.
By car or train, the actual journey to Deir ez-Zor is certainly longer, as only the direct route (as the crow flies) between Ar Raqqah and Deir ez-Zor has been calculated here.
Air line (approximately)
123 kilometers
67 nautical miles