| Oer-Erkenschwick to Opwijk | 140.47 mi (226.06 km) |
| Oer-Erkenschwick to Ostend | 188.75 mi (303.76 km) |
| Oer-Erkenschwick to Oud-Heverlee | 124.97 mi (201.12 km) |
| Oer-Erkenschwick to Oud-Turnhout | 100.13 mi (161.14 km) |
| Oer-Erkenschwick to Oudenaarde | 167.10 mi (268.91 km) |
| Oer-Erkenschwick to Oudenburg | 185.88 mi (299.14 km) |
| Oer-Erkenschwick to Oupeye | 94.94 mi (152.78 km) |
| Oer-Erkenschwick to Overijse | 131.73 mi (212.00 km) |
| Oer-Erkenschwick to Overpelt | 84.30 mi (135.67 km) |
| Oer-Erkenschwick to Paal | 98.89 mi (159.15 km) |
| Oer-Erkenschwick to Peer | 85.11 mi (136.97 km) |
| Oer-Erkenschwick to Pepinster | 96.91 mi (155.97 km) |
| Oer-Erkenschwick to Peruwelz | 177.15 mi (285.09 km) |
| Oer-Erkenschwick to Perwez | 126.88 mi (204.20 km) |
| Oer-Erkenschwick to Philippeville | 154.15 mi (248.08 km) |
