The calculated distance (air line) between Bouffémont and Soisy-sous-Montmorency is approximately 4 miles respectively 6 kilometers.
By car or train, the actual journey to Soisy-sous-Montmorency is certainly longer, as only the direct route (as the crow flies) between Bouffémont and Soisy-sous-Montmorency has been calculated here.
Air line (approximately)
6 kilometers
3 nautical miles