| Largo to Orbetello | 5,133.85 mi (8,262.13 km) |
| Largo to Oria | 5,491.33 mi (8,837.44 km) |
| Largo to Oristano | 5,077.78 mi (8,171.90 km) |
| Largo to Orta Nova | 5,375.84 mi (8,651.58 km) |
| Largo to Orte | 5,187.90 mi (8,349.12 km) |
| Largo to Ortona | 5,284.24 mi (8,504.17 km) |
| Largo to Orvieto | 5,167.79 mi (8,316.75 km) |
| Largo to Orzinuovi | 4,995.59 mi (8,039.63 km) |
| Largo to Osimo | 5,208.93 mi (8,382.96 km) |
| Largo to Ospitaletto | 4,997.84 mi (8,043.24 km) |
| Largo to Ostuni | 5,481.49 mi (8,821.60 km) |
| Largo to Ottaviano | 5,332.94 mi (8,582.54 km) |
| Largo to Ovada | 4,956.77 mi (7,977.15 km) |
| Largo to Ozieri | 5,079.54 mi (8,174.73 km) |
| Largo to Paceco | 5,326.21 mi (8,571.71 km) |
