The calculated distance (air line) between San Casciano in Val di Pesa and Quarto Oggiaro is approximately 163 miles respectively 262 kilometers.
By car or train, the actual journey to Quarto Oggiaro is certainly longer, as only the direct route (as the crow flies) between San Casciano in Val di Pesa and Quarto Oggiaro has been calculated here.
Air line (approximately)
262 kilometers
141 nautical miles