The calculated distance (air line) between Buenos Aires and Gobernador Gálvez is approximately 170 miles respectively 273 kilometers.
By car or train, the actual journey to Gobernador Gálvez is certainly longer, as only the direct route (as the crow flies) between Buenos Aires and Gobernador Gálvez has been calculated here.
Air line (approximately)
273 kilometers
147 nautical miles