| Notteroy to Orbetello | 1,158.63 mi (1,864.64 km) |
| Notteroy to Oria | 1,329.77 mi (2,140.05 km) |
| Notteroy to Oristano | 1,335.54 mi (2,149.34 km) |
| Notteroy to Orta Nova | 1,255.78 mi (2,020.98 km) |
| Notteroy to Orte | 1,159.77 mi (1,866.47 km) |
| Notteroy to Ortona | 1,176.77 mi (1,893.83 km) |
| Notteroy to Orvieto | 1,141.17 mi (1,836.53 km) |
| Notteroy to Orzinuovi | 953.77 mi (1,534.94 km) |
| Notteroy to Osimo | 1,093.79 mi (1,760.28 km) |
| Notteroy to Ospitaletto | 942.94 mi (1,517.51 km) |
| Notteroy to Ostuni | 1,313.45 mi (2,113.79 km) |
| Notteroy to Ottaviano | 1,280.16 mi (2,060.22 km) |
| Notteroy to Ovada | 1,008.84 mi (1,623.57 km) |
| Notteroy to Ozieri | 1,287.70 mi (2,072.36 km) |
| Notteroy to Paceco | 1,469.09 mi (2,364.27 km) |
