The calculated distance (air line) between Barros Blancos and Juan L. Lacaze is approximately 86 miles respectively 138 kilometers.
By car or train, the actual journey to Juan L. Lacaze is certainly longer, as only the direct route (as the crow flies) between Barros Blancos and Juan L. Lacaze has been calculated here.
Air line (approximately)
138 kilometers
74 nautical miles