| Castellon de la Plana to Opwijk | 785.57 mi (1,264.25 km) |
| Castellon de la Plana to Ostend | 789.62 mi (1,270.78 km) |
| Castellon de la Plana to Oud-Heverlee | 783.16 mi (1,260.37 km) |
| Castellon de la Plana to Oud-Turnhout | 819.21 mi (1,318.38 km) |
| Castellon de la Plana to Oudenaarde | 770.98 mi (1,240.77 km) |
| Castellon de la Plana to Oudenburg | 787.45 mi (1,267.28 km) |
| Castellon de la Plana to Oupeye | 790.05 mi (1,271.46 km) |
| Castellon de la Plana to Overijse | 778.04 mi (1,252.13 km) |
| Castellon de la Plana to Overpelt | 819.08 mi (1,318.19 km) |
| Castellon de la Plana to Paal | 803.90 mi (1,293.74 km) |
| Castellon de la Plana to Peer | 814.24 mi (1,310.39 km) |
| Castellon de la Plana to Pepinster | 784.00 mi (1,261.73 km) |
| Castellon de la Plana to Peruwelz | 748.52 mi (1,204.62 km) |
| Castellon de la Plana to Perwez | 771.62 mi (1,241.80 km) |
| Castellon de la Plana to Philippeville | 740.10 mi (1,191.08 km) |
