| Palazzolo Acreide to Orbetello | 420.00 mi (675.92 km) |
| Palazzolo Acreide to Oria | 279.37 mi (449.60 km) |
| Palazzolo Acreide to Oristano | 393.72 mi (633.63 km) |
| Palazzolo Acreide to Orta Nova | 298.12 mi (479.78 km) |
| Palazzolo Acreide to Orte | 396.18 mi (637.59 km) |
| Palazzolo Acreide to Ortona | 366.36 mi (589.60 km) |
| Palazzolo Acreide to Orvieto | 417.86 mi (672.49 km) |
| Palazzolo Acreide to Orzinuovi | 631.02 mi (1,015.53 km) |
| Palazzolo Acreide to Osimo | 449.94 mi (724.10 km) |
| Palazzolo Acreide to Ospitaletto | 637.83 mi (1,026.48 km) |
| Palazzolo Acreide to Ostuni | 291.73 mi (469.50 km) |
| Palazzolo Acreide to Ottaviano | 262.74 mi (422.84 km) |
| Palazzolo Acreide to Ovada | 616.83 mi (992.69 km) |
| Palazzolo Acreide to Ozieri | 399.97 mi (643.69 km) |
| Palazzolo Acreide to Paceco | 143.79 mi (231.41 km) |
