| Waterville to Opwijk | 3,313.13 mi (5,331.97 km) |
| Waterville to Ostend | 3,255.60 mi (5,239.38 km) |
| Waterville to Oud-Heverlee | 3,336.12 mi (5,368.97 km) |
| Waterville to Oud-Turnhout | 3,335.68 mi (5,368.26 km) |
| Waterville to Oudenaarde | 3,292.79 mi (5,299.24 km) |
| Waterville to Oudenburg | 3,259.93 mi (5,246.36 km) |
| Waterville to Oupeye | 3,378.69 mi (5,437.48 km) |
| Waterville to Overijse | 3,332.13 mi (5,362.54 km) |
| Waterville to Overpelt | 3,355.63 mi (5,400.36 km) |
| Waterville to Paal | 3,350.76 mi (5,392.53 km) |
| Waterville to Peer | 3,359.39 mi (5,406.42 km) |
| Waterville to Pepinster | 3,389.61 mi (5,455.06 km) |
| Waterville to Peruwelz | 3,301.01 mi (5,312.46 km) |
| Waterville to Perwez | 3,347.80 mi (5,387.76 km) |
| Waterville to Philippeville | 3,348.80 mi (5,389.37 km) |
