| Willenhall to Opwijk | 289.15 mi (465.35 km) |
| Willenhall to Ostend | 231.93 mi (373.25 km) |
| Willenhall to Oud-Heverlee | 312.14 mi (502.34 km) |
| Willenhall to Oud-Turnhout | 312.27 mi (502.54 km) |
| Willenhall to Oudenaarde | 270.09 mi (434.66 km) |
| Willenhall to Oudenburg | 236.35 mi (380.37 km) |
| Willenhall to Oupeye | 354.48 mi (570.49 km) |
| Willenhall to Overijse | 308.40 mi (496.32 km) |
| Willenhall to Overpelt | 332.23 mi (534.68 km) |
| Willenhall to Paal | 326.65 mi (525.69 km) |
| Willenhall to Peer | 335.70 mi (540.26 km) |
| Willenhall to Pepinster | 365.50 mi (588.22 km) |
| Willenhall to Peruwelz | 281.17 mi (452.50 km) |
| Willenhall to Perwez | 324.36 mi (522.01 km) |
| Willenhall to Philippeville | 328.86 mi (529.25 km) |
