| Castellon de la Plana to Odessa (Texas) | 5,418.74 mi (8,720.62 km) |
| Castellon de la Plana to Ogden (Utah) | 5,388.07 mi (8,671.25 km) |
| Castellon de la Plana to Oildale (California) | 5,941.76 mi (9,562.33 km) |
| Castellon de la Plana to Ojus (Florida) | 4,592.05 mi (7,390.19 km) |
| Castellon de la Plana to Okemos (Michigan) | 4,186.87 mi (6,738.12 km) |
| Castellon de la Plana to Oklahoma City (Oklahoma) | 5,047.02 mi (8,122.39 km) |
| Castellon de la Plana to Okmulgee (Oklahoma) | 4,973.36 mi (8,003.85 km) |
| Castellon de la Plana to Olathe (Kansas) | 4,787.70 mi (7,705.06 km) |
| Castellon de la Plana to Old Jamestown (Missouri) | 4,587.77 mi (7,383.30 km) |
| Castellon de la Plana to Oldsmar (Florida) | 4,637.42 mi (7,463.21 km) |
| Castellon de la Plana to Olean (New York) | 3,936.61 mi (6,335.37 km) |
| Castellon de la Plana to Olive Branch (Mississippi) | 4,716.97 mi (7,591.23 km) |
| Castellon de la Plana to Olivehurst (California) | 5,845.42 mi (9,407.30 km) |
| Castellon de la Plana to Olney (Maryland) | 3,965.16 mi (6,381.31 km) |
| Castellon de la Plana to Olympia (Washington) | 5,474.06 mi (8,809.64 km) |
