| Darby to Opwijk | 3,735.06 mi (6,011.00 km) |
| Darby to Ostend | 3,677.44 mi (5,918.27 km) |
| Darby to Oud-Heverlee | 3,758.04 mi (6,047.97 km) |
| Darby to Oud-Turnhout | 3,758.46 mi (6,048.66 km) |
| Darby to Oudenaarde | 3,714.29 mi (5,977.57 km) |
| Darby to Oudenburg | 3,681.73 mi (5,925.18 km) |
| Darby to Oupeye | 3,800.82 mi (6,116.82 km) |
| Darby to Overijse | 3,753.90 mi (6,041.33 km) |
| Darby to Overpelt | 3,778.43 mi (6,080.79 km) |
| Darby to Paal | 3,773.20 mi (6,072.38 km) |
| Darby to Peer | 3,782.08 mi (6,086.67 km) |
| Darby to Pepinster | 3,811.59 mi (6,134.16 km) |
| Darby to Peruwelz | 3,721.94 mi (5,989.88 km) |
| Darby to Perwez | 3,769.44 mi (6,066.33 km) |
| Darby to Philippeville | 3,769.62 mi (6,066.62 km) |
