The calculated distance (air line) between Chambray-lès-Tours and Cergy-Pontoise is approximately 134 miles respectively 215 kilometers.
By car or train, the actual journey to Cergy-Pontoise is certainly longer, as only the direct route (as the crow flies) between Chambray-lès-Tours and Cergy-Pontoise has been calculated here.
Air line (approximately)
215 kilometers
116 nautical miles