| Waterbury to Opwijk | 3,573.28 mi (5,750.64 km) |
| Waterbury to Ostend | 3,515.68 mi (5,657.93 km) |
| Waterbury to Oud-Heverlee | 3,596.26 mi (5,787.63 km) |
| Waterbury to Oud-Turnhout | 3,596.55 mi (5,788.08 km) |
| Waterbury to Oudenaarde | 3,552.59 mi (5,717.34 km) |
| Waterbury to Oudenburg | 3,519.98 mi (5,664.86 km) |
| Waterbury to Oupeye | 3,639.01 mi (5,856.42 km) |
| Waterbury to Overijse | 3,592.16 mi (5,781.02 km) |
| Waterbury to Overpelt | 3,616.51 mi (5,820.20 km) |
| Waterbury to Paal | 3,611.34 mi (5,811.89 km) |
| Waterbury to Peer | 3,620.18 mi (5,826.11 km) |
| Waterbury to Pepinster | 3,649.81 mi (5,873.80 km) |
| Waterbury to Peruwelz | 3,560.34 mi (5,729.82 km) |
| Waterbury to Perwez | 3,607.72 mi (5,806.06 km) |
| Waterbury to Philippeville | 3,608.05 mi (5,806.59 km) |
