The calculated distance (air line) between La Ferté-Bernard and Cergy-Pontoise is approximately 88 miles respectively 141 kilometers.
By car or train, the actual journey to Cergy-Pontoise is certainly longer, as only the direct route (as the crow flies) between La Ferté-Bernard and Cergy-Pontoise has been calculated here.
Air line (approximately)
141 kilometers
76 nautical miles