| Blacksburg to Orbetello | 4,626.16 mi (7,445.08 km) |
| Blacksburg to Oria | 4,978.85 mi (8,012.68 km) |
| Blacksburg to Oristano | 4,595.41 mi (7,395.60 km) |
| Blacksburg to Orta Nova | 4,863.48 mi (7,827.02 km) |
| Blacksburg to Orte | 4,677.02 mi (7,526.93 km) |
| Blacksburg to Ortona | 4,768.79 mi (7,674.63 km) |
| Blacksburg to Orvieto | 4,655.87 mi (7,492.89 km) |
| Blacksburg to Orzinuovi | 4,470.75 mi (7,194.98 km) |
| Blacksburg to Osimo | 4,688.41 mi (7,545.27 km) |
| Blacksburg to Ospitaletto | 4,471.64 mi (7,196.41 km) |
| Blacksburg to Ostuni | 4,967.66 mi (7,994.68 km) |
| Blacksburg to Ottaviano | 4,827.22 mi (7,768.67 km) |
| Blacksburg to Ovada | 4,440.05 mi (7,145.57 km) |
| Blacksburg to Ozieri | 4,590.98 mi (7,388.48 km) |
| Blacksburg to Paceco | 4,846.12 mi (7,799.07 km) |
