The calculated distance (air line) between Cergy-Pontoise and Meulan-en-Yvelines is approximately 8 miles respectively 13 kilometers.
By car or train, the actual journey to Meulan-en-Yvelines is certainly longer, as only the direct route (as the crow flies) between Cergy-Pontoise and Meulan-en-Yvelines has been calculated here.
Air line (approximately)
13 kilometers
7 nautical miles