| Castellon de la Plana to Octeville | 670.94 mi (1,079.77 km) |
| Castellon de la Plana to Oignies | 739.17 mi (1,189.58 km) |
| Castellon de la Plana to Oissel | 648.97 mi (1,044.41 km) |
| Castellon de la Plana to Olivet | 552.90 mi (889.80 km) |
| Castellon de la Plana to Ollioules | 373.97 mi (601.85 km) |
| Castellon de la Plana to Olonne-sur-Mer | 461.12 mi (742.10 km) |
| Castellon de la Plana to Oloron-Sainte-Marie | 223.84 mi (360.23 km) |
| Castellon de la Plana to Onet Village | 331.28 mi (533.15 km) |
| Castellon de la Plana to Onnaing | 740.09 mi (1,191.05 km) |
| Castellon de la Plana to Orange | 379.51 mi (610.76 km) |
| Castellon de la Plana to Orchies | 742.04 mi (1,194.19 km) |
| Castellon de la Plana to Orleans | 555.59 mi (894.14 km) |
| Castellon de la Plana to Orly | 616.97 mi (992.92 km) |
| Castellon de la Plana to Ormesson-sur-Marne | 621.22 mi (999.76 km) |
| Castellon de la Plana to Orsay | 611.99 mi (984.90 km) |
