The calculated distance (air line) between Ivry-sur-Seine and Bourg-la-Reine is approximately 4 miles respectively 6 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 Ivry-sur-Seine and Bourg-la-Reine has been calculated here.
Air line (approximately)
6 kilometers
3 nautical miles