| Pori to Opwijk | 986.65 mi (1,587.87 km) |
| Pori to Ostend | 1,005.28 mi (1,617.84 km) |
| Pori to Oud-Heverlee | 981.96 mi (1,580.32 km) |
| Pori to Oud-Turnhout | 946.76 mi (1,523.67 km) |
| Pori to Oudenaarde | 1,008.14 mi (1,622.44 km) |
| Pori to Oudenburg | 1,005.46 mi (1,618.12 km) |
| Pori to Oupeye | 965.14 mi (1,553.25 km) |
| Pori to Overijse | 988.13 mi (1,590.25 km) |
| Pori to Overpelt | 941.59 mi (1,515.34 km) |
| Pori to Paal | 957.69 mi (1,541.26 km) |
| Pori to Peer | 945.44 mi (1,521.54 km) |
| Pori to Pepinster | 969.18 mi (1,559.75 km) |
| Pori to Peruwelz | 1,027.21 mi (1,653.14 km) |
| Pori to Perwez | 990.17 mi (1,593.53 km) |
| Pori to Philippeville | 1,020.99 mi (1,643.13 km) |
