| Aiken to Oerlinghausen | 4,451.95 mi (7,164.72 km) |
| Aiken to Oestrich-Winkel | 4,477.60 mi (7,206.00 km) |
| Aiken to Offenburg | 4,516.57 mi (7,268.72 km) |
| Aiken to Oftersheim | 4,518.77 mi (7,272.25 km) |
| Aiken to Ohrdruf | 4,564.93 mi (7,346.55 km) |
| Aiken to Ohringen | 4,561.26 mi (7,340.64 km) |
| Aiken to Olbernhau | 4,672.53 mi (7,519.71 km) |
| Aiken to Olching | 4,665.52 mi (7,508.43 km) |
| Aiken to Oldenburg | 4,403.78 mi (7,087.20 km) |
| Aiken to Oldenburg in Holstein | 4,474.43 mi (7,200.90 km) |
| Aiken to Olfen | 4,407.69 mi (7,093.49 km) |
| Aiken to Olpe | 4,443.82 mi (7,151.64 km) |
| Aiken to Olsberg | 4,461.03 mi (7,179.34 km) |
| Aiken to Oranienburg | 4,606.29 mi (7,413.11 km) |
| Aiken to Ortenberg | 4,510.86 mi (7,259.53 km) |
