| South Valley to Opwijk | 5,169.26 mi (8,319.12 km) |
| South Valley to Ostend | 5,114.71 mi (8,231.33 km) |
| South Valley to Oud-Heverlee | 5,191.56 mi (8,355.01 km) |
| South Valley to Oud-Turnhout | 5,181.87 mi (8,339.41 km) |
| South Valley to Oudenaarde | 5,153.95 mi (8,294.48 km) |
| South Valley to Oudenburg | 5,119.26 mi (8,238.66 km) |
| South Valley to Oupeye | 5,230.42 mi (8,417.55 km) |
| South Valley to Overijse | 5,189.08 mi (8,351.02 km) |
| South Valley to Overpelt | 5,200.87 mi (8,369.99 km) |
| South Valley to Paal | 5,200.15 mi (8,368.84 km) |
| South Valley to Peer | 5,205.72 mi (8,377.79 km) |
| South Valley to Pepinster | 5,242.47 mi (8,436.94 km) |
| South Valley to Peruwelz | 5,167.29 mi (8,315.94 km) |
| South Valley to Perwez | 5,205.57 mi (8,377.55 km) |
| South Valley to Philippeville | 5,214.40 mi (8,391.77 km) |
