| South Charleston to Orbetello | 4,636.43 mi (7,461.62 km) |
| South Charleston to Oria | 4,987.22 mi (8,026.16 km) |
| South Charleston to Oristano | 4,611.93 mi (7,422.19 km) |
| South Charleston to Orta Nova | 4,872.10 mi (7,840.89 km) |
| South Charleston to Orte | 4,686.38 mi (7,542.00 km) |
| South Charleston to Ortona | 4,776.79 mi (7,687.51 km) |
| South Charleston to Orvieto | 4,665.00 mi (7,507.60 km) |
| South Charleston to Orzinuovi | 4,476.86 mi (7,204.80 km) |
| South Charleston to Osimo | 4,695.24 mi (7,556.26 km) |
| South Charleston to Ospitaletto | 4,477.37 mi (7,205.64 km) |
| South Charleston to Ostuni | 4,975.71 mi (8,007.63 km) |
| South Charleston to Ottaviano | 4,837.60 mi (7,785.37 km) |
| South Charleston to Ovada | 4,448.38 mi (7,158.97 km) |
| South Charleston to Ozieri | 4,606.05 mi (7,412.72 km) |
| South Charleston to Paceco | 4,862.66 mi (7,825.69 km) |
