| Dix Hills to Orbetello | 4,172.87 mi (6,715.59 km) |
| Dix Hills to Oria | 4,525.85 mi (7,283.65 km) |
| Dix Hills to Oristano | 4,142.22 mi (6,666.26 km) |
| Dix Hills to Orta Nova | 4,410.44 mi (7,097.92 km) |
| Dix Hills to Orte | 4,223.86 mi (6,797.65 km) |
| Dix Hills to Ortona | 4,315.89 mi (6,945.75 km) |
| Dix Hills to Orvieto | 4,202.75 mi (6,763.67 km) |
| Dix Hills to Orzinuovi | 4,018.40 mi (6,466.99 km) |
| Dix Hills to Osimo | 4,235.81 mi (6,816.88 km) |
| Dix Hills to Ospitaletto | 4,019.41 mi (6,468.61 km) |
| Dix Hills to Ostuni | 4,514.73 mi (7,265.75 km) |
| Dix Hills to Ottaviano | 4,373.92 mi (7,039.14 km) |
| Dix Hills to Ovada | 3,987.12 mi (6,416.64 km) |
| Dix Hills to Ozieri | 4,137.62 mi (6,658.85 km) |
| Dix Hills to Paceco | 4,392.94 mi (7,069.76 km) |
