| Southwater to Opwijk | 197.26 mi (317.46 km) |
| Southwater to Ostend | 142.56 mi (229.43 km) |
| Southwater to Oud-Heverlee | 218.94 mi (352.35 km) |
| Southwater to Oud-Turnhout | 231.99 mi (373.36 km) |
| Southwater to Oudenaarde | 172.50 mi (277.61 km) |
| Southwater to Oudenburg | 145.86 mi (234.73 km) |
| Southwater to Oupeye | 262.29 mi (422.11 km) |
| Southwater to Overijse | 213.50 mi (343.59 km) |
| Southwater to Overpelt | 250.50 mi (403.14 km) |
| Southwater to Paal | 240.04 mi (386.30 km) |
| Southwater to Peer | 252.08 mi (405.69 km) |
| Southwater to Pepinster | 271.20 mi (436.45 km) |
| Southwater to Peruwelz | 175.50 mi (282.43 km) |
| Southwater to Perwez | 227.18 mi (365.62 km) |
| Southwater to Philippeville | 222.31 mi (357.78 km) |
