| Frankfort to Opwijk | 4,197.91 mi (6,755.88 km) |
| Frankfort to Ostend | 4,140.68 mi (6,663.77 km) |
| Frankfort to Oud-Heverlee | 4,220.88 mi (6,792.85 km) |
| Frankfort to Oud-Turnhout | 4,218.52 mi (6,789.06 km) |
| Frankfort to Oudenaarde | 4,178.48 mi (6,724.61 km) |
| Frankfort to Oudenburg | 4,145.08 mi (6,670.86 km) |
| Frankfort to Oupeye | 4,262.92 mi (6,860.51 km) |
| Frankfort to Overijse | 4,217.17 mi (6,786.88 km) |
| Frankfort to Overpelt | 4,238.38 mi (6,821.02 km) |
| Frankfort to Paal | 4,234.36 mi (6,814.54 km) |
| Frankfort to Peer | 4,242.40 mi (6,827.48 km) |
| Frankfort to Pepinster | 4,274.13 mi (6,878.55 km) |
| Frankfort to Peruwelz | 4,187.74 mi (6,739.52 km) |
| Frankfort to Perwez | 4,233.09 mi (6,812.50 km) |
| Frankfort to Philippeville | 4,235.64 mi (6,816.60 km) |
