| Middleburg to Orbetello | 4,998.82 mi (8,044.83 km) |
| Middleburg to Oria | 5,355.73 mi (8,619.22 km) |
| Middleburg to Oristano | 4,947.53 mi (7,962.29 km) |
| Middleburg to Orta Nova | 5,240.16 mi (8,433.23 km) |
| Middleburg to Orte | 5,052.33 mi (8,130.93 km) |
| Middleburg to Ortona | 5,147.90 mi (8,284.74 km) |
| Middleburg to Orvieto | 5,032.00 mi (8,098.22 km) |
| Middleburg to Orzinuovi | 4,857.25 mi (7,816.99 km) |
| Middleburg to Osimo | 5,071.57 mi (8,161.90 km) |
| Middleburg to Ospitaletto | 4,859.25 mi (7,820.20 km) |
| Middleburg to Ostuni | 5,345.62 mi (8,602.95 km) |
| Middleburg to Ottaviano | 5,198.48 mi (8,366.14 km) |
| Middleburg to Ovada | 4,819.89 mi (7,756.86 km) |
| Middleburg to Ozieri | 4,948.10 mi (7,963.20 km) |
| Middleburg to Paceco | 5,196.68 mi (8,363.25 km) |
