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