| Parker to Opwijk | 4,860.51 mi (7,822.23 km) |
| Parker to Ostend | 4,806.54 mi (7,735.38 km) |
| Parker to Oud-Heverlee | 4,882.64 mi (7,857.84 km) |
| Parker to Oud-Turnhout | 4,871.94 mi (7,840.63 km) |
| Parker to Oudenaarde | 4,845.85 mi (7,798.64 km) |
| Parker to Oudenburg | 4,811.10 mi (7,742.71 km) |
| Parker to Oupeye | 4,920.91 mi (7,919.44 km) |
| Parker to Overijse | 4,880.34 mi (7,854.15 km) |
| Parker to Overpelt | 4,890.76 mi (7,870.92 km) |
| Parker to Paal | 4,890.51 mi (7,870.51 km) |
| Parker to Peer | 4,895.71 mi (7,878.88 km) |
| Parker to Pepinster | 4,933.04 mi (7,938.96 km) |
| Parker to Peruwelz | 4,859.75 mi (7,821.00 km) |
| Parker to Perwez | 4,896.85 mi (7,880.72 km) |
| Parker to Philippeville | 4,906.58 mi (7,896.38 km) |
