| Foster City to Opwijk | 5,514.58 mi (8,874.86 km) |
| Foster City to Ostend | 5,465.18 mi (8,795.35 km) |
| Foster City to Oud-Heverlee | 5,535.22 mi (8,908.07 km) |
| Foster City to Oud-Turnhout | 5,518.44 mi (8,881.07 km) |
| Foster City to Oudenaarde | 5,504.17 mi (8,858.11 km) |
| Foster City to Oudenburg | 5,469.68 mi (8,802.61 km) |
| Foster City to Oupeye | 5,569.11 mi (8,962.62 km) |
| Foster City to Overijse | 5,534.11 mi (8,906.29 km) |
| Foster City to Overpelt | 5,535.73 mi (8,908.89 km) |
| Foster City to Paal | 5,538.43 mi (8,913.24 km) |
| Foster City to Peer | 5,541.22 mi (8,917.72 km) |
| Foster City to Pepinster | 5,581.50 mi (8,982.56 km) |
| Foster City to Peruwelz | 5,521.14 mi (8,885.42 km) |
| Foster City to Perwez | 5,550.46 mi (8,932.61 km) |
| Foster City to Philippeville | 5,565.42 mi (8,956.68 km) |
