| Sessa Aurunca to Orbetello | 162.97 mi (262.27 km) |
| Sessa Aurunca to Oria | 199.84 mi (321.61 km) |
| Sessa Aurunca to Oristano | 294.92 mi (474.63 km) |
| Sessa Aurunca to Orta Nova | 92.57 mi (148.97 km) |
| Sessa Aurunca to Orte | 116.31 mi (187.18 km) |
| Sessa Aurunca to Ortona | 80.81 mi (130.06 km) |
| Sessa Aurunca to Orvieto | 138.90 mi (223.54 km) |
| Sessa Aurunca to Orzinuovi | 351.06 mi (564.97 km) |
| Sessa Aurunca to Osimo | 157.15 mi (252.90 km) |
| Sessa Aurunca to Ospitaletto | 355.89 mi (572.75 km) |
| Sessa Aurunca to Ostuni | 193.47 mi (311.36 km) |
| Sessa Aurunca to Ottaviano | 38.80 mi (62.45 km) |
| Sessa Aurunca to Ovada | 356.09 mi (573.07 km) |
| Sessa Aurunca to Ozieri | 261.26 mi (420.46 km) |
| Sessa Aurunca to Paceco | 236.31 mi (380.30 km) |
