| South River to Opwijk | 3,676.07 mi (5,916.06 km) |
| South River to Ostend | 3,618.44 mi (5,823.32 km) |
| South River to Oud-Heverlee | 3,699.04 mi (5,953.03 km) |
| South River to Oud-Turnhout | 3,699.50 mi (5,953.76 km) |
| South River to Oudenaarde | 3,655.29 mi (5,882.62 km) |
| South River to Oudenburg | 3,622.74 mi (5,830.23 km) |
| South River to Oupeye | 3,741.83 mi (6,021.89 km) |
| South River to Overijse | 3,694.91 mi (5,946.38 km) |
| South River to Overpelt | 3,719.46 mi (5,985.89 km) |
| South River to Paal | 3,714.22 mi (5,977.46 km) |
| South River to Peer | 3,723.11 mi (5,991.76 km) |
| South River to Pepinster | 3,752.60 mi (6,039.23 km) |
| South River to Peruwelz | 3,662.92 mi (5,894.91 km) |
| South River to Perwez | 3,710.44 mi (5,971.37 km) |
| South River to Philippeville | 3,710.61 mi (5,971.64 km) |
