| Sumner to Opwijk | 4,944.83 mi (7,957.93 km) |
| Sumner to Ostend | 4,898.36 mi (7,883.14 km) |
| Sumner to Oud-Heverlee | 4,964.46 mi (7,989.53 km) |
| Sumner to Oud-Turnhout | 4,944.89 mi (7,958.03 km) |
| Sumner to Oudenaarde | 4,936.71 mi (7,944.86 km) |
| Sumner to Oudenburg | 4,902.78 mi (7,890.27 km) |
| Sumner to Oupeye | 4,995.78 mi (8,039.92 km) |
| Sumner to Overijse | 4,963.97 mi (7,988.73 km) |
| Sumner to Overpelt | 4,961.22 mi (7,984.31 km) |
| Sumner to Paal | 4,965.33 mi (7,990.92 km) |
| Sumner to Peer | 4,966.90 mi (7,993.46 km) |
| Sumner to Pepinster | 5,008.14 mi (8,059.83 km) |
| Sumner to Peruwelz | 4,955.03 mi (7,974.36 km) |
| Sumner to Perwez | 4,980.04 mi (8,014.59 km) |
| Sumner to Philippeville | 4,997.45 mi (8,042.62 km) |
