| Puerto Real to Opwijk | 1,121.41 mi (1,804.73 km) |
| Puerto Real to Ostend | 1,110.20 mi (1,786.69 km) |
| Puerto Real to Oud-Heverlee | 1,124.73 mi (1,810.07 km) |
| Puerto Real to Oud-Turnhout | 1,160.26 mi (1,867.26 km) |
| Puerto Real to Oudenaarde | 1,101.56 mi (1,772.78 km) |
| Puerto Real to Oudenburg | 1,109.21 mi (1,785.09 km) |
| Puerto Real to Oupeye | 1,141.46 mi (1,837.01 km) |
| Puerto Real to Overijse | 1,118.68 mi (1,800.34 km) |
| Puerto Real to Overpelt | 1,164.76 mi (1,874.50 km) |
| Puerto Real to Paal | 1,148.69 mi (1,848.63 km) |
| Puerto Real to Peer | 1,160.85 mi (1,868.20 km) |
| Puerto Real to Pepinster | 1,137.97 mi (1,831.39 km) |
| Puerto Real to Peruwelz | 1,081.27 mi (1,740.13 km) |
| Puerto Real to Perwez | 1,116.15 mi (1,796.28 km) |
| Puerto Real to Philippeville | 1,085.28 mi (1,746.59 km) |
