| Solothurn to Opwijk | 300.10 mi (482.97 km) |
| Solothurn to Ostend | 346.38 mi (557.45 km) |
| Solothurn to Oud-Heverlee | 281.57 mi (453.14 km) |
| Solothurn to Oud-Turnhout | 305.68 mi (491.94 km) |
| Solothurn to Oudenaarde | 307.74 mi (495.26 km) |
| Solothurn to Oudenburg | 341.91 mi (550.25 km) |
| Solothurn to Oupeye | 256.01 mi (412.01 km) |
| Solothurn to Overijse | 281.40 mi (452.87 km) |
| Solothurn to Overpelt | 292.38 mi (470.55 km) |
| Solothurn to Paal | 284.82 mi (458.37 km) |
| Solothurn to Peer | 286.39 mi (460.90 km) |
| Solothurn to Pepinster | 244.23 mi (393.05 km) |
| Solothurn to Peruwelz | 290.12 mi (466.90 km) |
| Solothurn to Perwez | 265.77 mi (427.72 km) |
| Solothurn to Philippeville | 246.91 mi (397.37 km) |
