| Pacifica to Orbetello | 6,186.70 mi (9,956.53 km) |
| Pacifica to Oria | 6,479.21 mi (10,427.29 km) |
| Pacifica to Oristano | 6,248.89 mi (10,056.62 km) |
| Pacifica to Orta Nova | 6,378.08 mi (10,264.53 km) |
| Pacifica to Orte | 6,219.45 mi (10,009.23 km) |
| Pacifica to Ortona | 6,282.47 mi (10,110.66 km) |
| Pacifica to Orvieto | 6,196.82 mi (9,972.81 km) |
| Pacifica to Orzinuovi | 5,983.09 mi (9,628.85 km) |
| Pacifica to Osimo | 6,191.55 mi (9,964.33 km) |
| Pacifica to Ospitaletto | 5,978.36 mi (9,621.24 km) |
| Pacifica to Ostuni | 6,464.01 mi (10,402.81 km) |
| Pacifica to Ottaviano | 6,371.78 mi (10,254.39 km) |
| Pacifica to Ovada | 5,988.26 mi (9,637.17 km) |
| Pacifica to Ozieri | 6,224.12 mi (10,016.75 km) |
| Pacifica to Paceco | 6,480.35 mi (10,429.11 km) |
