| Cartaxo to Opwijk | 1,029.82 mi (1,657.34 km) |
| Cartaxo to Ostend | 1,007.70 mi (1,621.74 km) |
| Cartaxo to Oud-Heverlee | 1,037.58 mi (1,669.82 km) |
| Cartaxo to Oud-Turnhout | 1,071.18 mi (1,723.90 km) |
| Cartaxo to Oudenaarde | 1,006.83 mi (1,620.34 km) |
| Cartaxo to Oudenburg | 1,007.60 mi (1,621.58 km) |
| Cartaxo to Oupeye | 1,061.93 mi (1,709.02 km) |
| Cartaxo to Overijse | 1,031.05 mi (1,659.31 km) |
| Cartaxo to Overpelt | 1,079.32 mi (1,737.00 km) |
| Cartaxo to Paal | 1,063.17 mi (1,711.01 km) |
| Cartaxo to Peer | 1,076.36 mi (1,732.24 km) |
| Cartaxo to Pepinster | 1,060.87 mi (1,707.30 km) |
| Cartaxo to Peruwelz | 989.17 mi (1,591.92 km) |
| Cartaxo to Perwez | 1,031.84 mi (1,660.58 km) |
| Cartaxo to Philippeville | 1,002.93 mi (1,614.05 km) |
