| Den Helder to Opwijk | 138.00 mi (222.10 km) |
| Den Helder to Ostend | 141.27 mi (227.36 km) |
| Den Helder to Oud-Heverlee | 145.14 mi (233.58 km) |
| Den Helder to Oud-Turnhout | 112.13 mi (180.46 km) |
| Den Helder to Oudenaarde | 152.06 mi (244.72 km) |
| Den Helder to Oudenburg | 141.93 mi (228.42 km) |
| Den Helder to Oupeye | 158.39 mi (254.90 km) |
| Den Helder to Overijse | 148.84 mi (239.53 km) |
| Den Helder to Overpelt | 121.94 mi (196.24 km) |
| Den Helder to Paal | 132.10 mi (212.59 km) |
| Den Helder to Peer | 127.95 mi (205.91 km) |
| Den Helder to Pepinster | 169.76 mi (273.20 km) |
| Den Helder to Peruwelz | 174.27 mi (280.46 km) |
| Den Helder to Perwez | 159.57 mi (256.81 km) |
| Den Helder to Philippeville | 189.05 mi (304.24 km) |
