| Brent to Opwijk | 4,673.77 mi (7,521.71 km) |
| Brent to Ostend | 4,616.15 mi (7,428.97 km) |
| Brent to Oud-Heverlee | 4,696.75 mi (7,558.68 km) |
| Brent to Oud-Turnhout | 4,697.16 mi (7,559.35 km) |
| Brent to Oudenaarde | 4,652.97 mi (7,488.24 km) |
| Brent to Oudenburg | 4,620.44 mi (7,435.88 km) |
| Brent to Oupeye | 4,739.53 mi (7,627.54 km) |
| Brent to Overijse | 4,692.61 mi (7,552.02 km) |
| Brent to Overpelt | 4,717.12 mi (7,591.48 km) |
| Brent to Paal | 4,711.92 mi (7,583.10 km) |
| Brent to Peer | 4,720.79 mi (7,597.37 km) |
| Brent to Pepinster | 4,750.31 mi (7,644.88 km) |
| Brent to Peruwelz | 4,660.55 mi (7,500.43 km) |
| Brent to Perwez | 4,708.13 mi (7,577.01 km) |
| Brent to Philippeville | 4,708.22 mi (7,577.14 km) |
