| Solon to Opwijk | 3,914.79 mi (6,300.24 km) |
| Solon to Ostend | 3,857.65 mi (6,208.28 km) |
| Solon to Oud-Heverlee | 3,937.75 mi (6,337.19 km) |
| Solon to Oud-Turnhout | 3,934.99 mi (6,332.75 km) |
| Solon to Oudenaarde | 3,895.58 mi (6,269.32 km) |
| Solon to Oudenburg | 3,862.06 mi (6,215.39 km) |
| Solon to Oupeye | 3,979.66 mi (6,404.64 km) |
| Solon to Overijse | 3,934.10 mi (6,331.33 km) |
| Solon to Overpelt | 3,954.82 mi (6,364.68 km) |
| Solon to Paal | 3,950.97 mi (6,358.47 km) |
| Solon to Peer | 3,958.89 mi (6,371.21 km) |
| Solon to Pepinster | 3,990.93 mi (6,422.78 km) |
| Solon to Peruwelz | 3,905.11 mi (6,284.66 km) |
| Solon to Perwez | 3,950.07 mi (6,357.03 km) |
| Solon to Philippeville | 3,953.01 mi (6,361.75 km) |
