| Odenton to Orbetello | 4,387.37 mi (7,060.79 km) |
| Odenton to Oria | 4,740.35 mi (7,628.86 km) |
| Odenton to Oristano | 4,356.15 mi (7,010.54 km) |
| Odenton to Orta Nova | 4,624.95 mi (7,443.14 km) |
| Odenton to Orte | 4,438.37 mi (7,142.87 km) |
| Odenton to Ortona | 4,530.38 mi (7,290.94 km) |
| Odenton to Orvieto | 4,417.26 mi (7,108.89 km) |
| Odenton to Orzinuovi | 4,232.79 mi (6,812.02 km) |
| Odenton to Osimo | 4,450.26 mi (7,162.00 km) |
| Odenton to Ospitaletto | 4,233.77 mi (6,813.60 km) |
| Odenton to Ostuni | 4,729.23 mi (7,610.95 km) |
| Odenton to Ottaviano | 4,588.41 mi (7,384.33 km) |
| Odenton to Ovada | 4,201.61 mi (6,761.84 km) |
| Odenton to Ozieri | 4,351.76 mi (7,003.47 km) |
| Odenton to Paceco | 4,606.86 mi (7,414.02 km) |
