| Watervliet to Opwijk | 3,550.38 mi (5,713.78 km) |
| Watervliet to Ostend | 3,492.88 mi (5,621.24 km) |
| Watervliet to Oud-Heverlee | 3,573.37 mi (5,750.78 km) |
| Watervliet to Oud-Turnhout | 3,572.67 mi (5,749.66 km) |
| Watervliet to Oudenaarde | 3,530.15 mi (5,681.23 km) |
| Watervliet to Oudenburg | 3,497.22 mi (5,628.23 km) |
| Watervliet to Oupeye | 3,615.88 mi (5,819.19 km) |
| Watervliet to Overijse | 3,569.41 mi (5,744.41 km) |
| Watervliet to Overpelt | 3,592.61 mi (5,781.75 km) |
| Watervliet to Paal | 3,587.86 mi (5,774.10 km) |
| Watervliet to Peer | 3,596.41 mi (5,787.86 km) |
| Watervliet to Pepinster | 3,626.84 mi (5,836.83 km) |
| Watervliet to Peruwelz | 3,538.50 mi (5,694.66 km) |
| Watervliet to Perwez | 3,585.11 mi (5,769.68 km) |
| Watervliet to Philippeville | 3,586.30 mi (5,771.59 km) |
