The calculated distance (air line) between Acqui Terme and Quarto Oggiaro is approximately 67 miles respectively 107 kilometers.
By car or train, the actual journey to Quarto Oggiaro is certainly longer, as only the direct route (as the crow flies) between Acqui Terme and Quarto Oggiaro has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles