The calculated distance (air line) between Herblay and Cormeilles-en-Parisis is approximately 2 miles respectively 3 kilometers.
By car or train, the actual journey to Cormeilles-en-Parisis is certainly longer, as only the direct route (as the crow flies) between Herblay and Cormeilles-en-Parisis has been calculated here.
Air line (approximately)
3 kilometers
2 nautical miles