The calculated distance (air line) between Marly-le-Roi and Louveciennes is approximately 1 miles respectively 2 kilometers.
By car or train, the actual journey to Louveciennes is certainly longer, as only the direct route (as the crow flies) between Marly-le-Roi and Louveciennes has been calculated here.
Air line (approximately)
2 kilometers
1 nautical miles