The calculated distance (air line) between Caudebec-lès-Elbeuf and Reims is approximately 136 miles respectively 218 kilometers.
By car or train, the actual journey to Reims is certainly longer, as only the direct route (as the crow flies) between Caudebec-lès-Elbeuf and Reims has been calculated here.
Air line (approximately)
218 kilometers
118 nautical miles