The calculated distance (air line) between Caudebec-lès-Elbeuf and Cergy-Pontoise is approximately 51 miles respectively 81 kilometers.
By car or train, the actual journey to Cergy-Pontoise is certainly longer, as only the direct route (as the crow flies) between Caudebec-lès-Elbeuf and Cergy-Pontoise has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles