| Roosevelt to Opwijk | 3,633.56 mi (5,847.65 km) |
| Roosevelt to Ostend | 3,575.93 mi (5,754.90 km) |
| Roosevelt to Oud-Heverlee | 3,656.54 mi (5,884.63 km) |
| Roosevelt to Oud-Turnhout | 3,657.15 mi (5,885.62 km) |
| Roosevelt to Oudenaarde | 3,612.71 mi (5,814.10 km) |
| Roosevelt to Oudenburg | 3,580.22 mi (5,761.80 km) |
| Roosevelt to Oupeye | 3,699.36 mi (5,953.54 km) |
| Roosevelt to Overijse | 3,652.38 mi (5,877.93 km) |
| Roosevelt to Overpelt | 3,677.12 mi (5,917.75 km) |
| Roosevelt to Paal | 3,671.81 mi (5,909.20 km) |
| Roosevelt to Peer | 3,680.74 mi (5,923.59 km) |
| Roosevelt to Pepinster | 3,710.10 mi (5,970.83 km) |
| Roosevelt to Peruwelz | 3,620.25 mi (5,826.24 km) |
| Roosevelt to Perwez | 3,667.88 mi (5,902.89 km) |
| Roosevelt to Philippeville | 3,667.92 mi (5,902.94 km) |
