| Aiken to Opwijk | 4,297.03 mi (6,915.40 km) |
| Aiken to Ostend | 4,239.35 mi (6,822.58 km) |
| Aiken to Oud-Heverlee | 4,319.98 mi (6,952.33 km) |
| Aiken to Oud-Turnhout | 4,321.27 mi (6,954.41 km) |
| Aiken to Oudenaarde | 4,275.84 mi (6,881.30 km) |
| Aiken to Oudenburg | 4,243.61 mi (6,829.43 km) |
| Aiken to Oupeye | 4,362.94 mi (7,021.48 km) |
| Aiken to Overijse | 4,315.71 mi (6,945.47 km) |
| Aiken to Overpelt | 4,341.24 mi (6,986.55 km) |
| Aiken to Paal | 4,335.66 mi (6,977.56 km) |
| Aiken to Peer | 4,344.78 mi (6,992.25 km) |
| Aiken to Pepinster | 4,373.56 mi (7,038.57 km) |
| Aiken to Peruwelz | 4,282.91 mi (6,892.68 km) |
| Aiken to Perwez | 4,331.10 mi (6,970.23 km) |
| Aiken to Philippeville | 4,330.46 mi (6,969.20 km) |
