| Brentwood to Opwijk | 173.52 mi (279.25 km) |
| Brentwood to Ostend | 115.88 mi (186.49 km) |
| Brentwood to Oud-Heverlee | 196.36 mi (316.02 km) |
| Brentwood to Oud-Turnhout | 202.41 mi (325.75 km) |
| Brentwood to Oudenaarde | 152.13 mi (244.84 km) |
| Brentwood to Oudenburg | 120.01 mi (193.14 km) |
| Brentwood to Oupeye | 239.65 mi (385.68 km) |
| Brentwood to Overijse | 191.93 mi (308.89 km) |
| Brentwood to Overpelt | 221.96 mi (357.22 km) |
| Brentwood to Paal | 213.91 mi (344.25 km) |
| Brentwood to Peer | 224.54 mi (361.36 km) |
| Brentwood to Pepinster | 249.93 mi (402.23 km) |
| Brentwood to Peruwelz | 161.44 mi (259.82 km) |
| Brentwood to Perwez | 207.30 mi (333.61 km) |
| Brentwood to Philippeville | 209.31 mi (336.85 km) |
