| Four Corners to Opwijk | 5,097.88 mi (8,204.24 km) |
| Four Corners to Ostend | 5,050.92 mi (8,128.67 km) |
| Four Corners to Oud-Heverlee | 5,117.68 mi (8,236.11 km) |
| Four Corners to Oud-Turnhout | 5,098.53 mi (8,205.29 km) |
| Four Corners to Oudenaarde | 5,089.39 mi (8,190.59 km) |
| Four Corners to Oudenburg | 5,055.36 mi (8,135.82 km) |
| Four Corners to Oupeye | 5,149.41 mi (8,287.17 km) |
| Four Corners to Overijse | 5,117.09 mi (8,235.16 km) |
| Four Corners to Overpelt | 5,115.01 mi (8,231.82 km) |
| Four Corners to Paal | 5,118.91 mi (8,238.08 km) |
| Four Corners to Peer | 5,120.67 mi (8,240.92 km) |
| Four Corners to Pepinster | 5,161.78 mi (8,307.09 km) |
| Four Corners to Peruwelz | 5,107.52 mi (8,219.75 km) |
| Four Corners to Perwez | 5,133.21 mi (8,261.10 km) |
| Four Corners to Philippeville | 5,150.25 mi (8,288.53 km) |
