| Merrick to Opwijk | 3,633.57 mi (5,847.66 km) |
| Merrick to Ostend | 3,575.93 mi (5,754.91 km) |
| Merrick to Oud-Heverlee | 3,656.54 mi (5,884.63 km) |
| Merrick to Oud-Turnhout | 3,657.18 mi (5,885.67 km) |
| Merrick to Oudenaarde | 3,612.70 mi (5,814.08 km) |
| Merrick to Oudenburg | 3,580.22 mi (5,761.81 km) |
| Merrick to Oupeye | 3,699.37 mi (5,953.56 km) |
| Merrick to Overijse | 3,652.38 mi (5,877.93 km) |
| Merrick to Overpelt | 3,677.15 mi (5,917.80 km) |
| Merrick to Paal | 3,671.83 mi (5,909.24 km) |
| Merrick to Peer | 3,680.77 mi (5,923.63 km) |
| Merrick to Pepinster | 3,710.11 mi (5,970.84 km) |
| Merrick to Peruwelz | 3,620.23 mi (5,826.20 km) |
| Merrick to Perwez | 3,667.88 mi (5,902.88 km) |
| Merrick to Philippeville | 3,667.89 mi (5,902.89 km) |
