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