| Smethwick to Opwijk | 283.49 mi (456.23 km) |
| Smethwick to Ostend | 226.15 mi (363.96 km) |
| Smethwick to Oud-Heverlee | 306.48 mi (493.23 km) |
| Smethwick to Oud-Turnhout | 307.15 mi (494.32 km) |
| Smethwick to Oudenaarde | 264.15 mi (425.10 km) |
| Smethwick to Oudenburg | 230.55 mi (371.04 km) |
| Smethwick to Oupeye | 348.96 mi (561.60 km) |
| Smethwick to Overijse | 302.66 mi (487.09 km) |
| Smethwick to Overpelt | 327.11 mi (526.44 km) |
| Smethwick to Paal | 321.30 mi (517.09 km) |
| Smethwick to Peer | 330.51 mi (531.90 km) |
| Smethwick to Pepinster | 359.91 mi (579.21 km) |
| Smethwick to Peruwelz | 274.95 mi (442.49 km) |
| Smethwick to Perwez | 318.57 mi (512.68 km) |
| Smethwick to Philippeville | 322.69 mi (519.32 km) |
