The calculated distance (air line) between Margny-lès-Compiègne and Cergy-Pontoise is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Cergy-Pontoise is certainly longer, as only the direct route (as the crow flies) between Margny-lès-Compiègne and Cergy-Pontoise has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles