| Castellon de la Plana to Orangevale (California) | 5,853.94 mi (9,421.00 km) |
| Castellon de la Plana to Orchards (Washington) | 5,533.21 mi (8,904.85 km) |
| Castellon de la Plana to Orcutt (California) | 6,023.02 mi (9,693.12 km) |
| Castellon de la Plana to Oregon (Ohio) | 4,178.13 mi (6,724.05 km) |
| Castellon de la Plana to Oregon (Wisconsin) | 4,397.50 mi (7,077.10 km) |
| Castellon de la Plana to Oregon City (Oregon) | 5,553.29 mi (8,937.16 km) |
| Castellon de la Plana to Orem (Utah) | 5,421.97 mi (8,725.82 km) |
| Castellon de la Plana to Orinda (California) | 5,930.12 mi (9,543.60 km) |
| Castellon de la Plana to Orland Park (Illinois) | 4,377.76 mi (7,045.32 km) |
| Castellon de la Plana to Orlando (Florida) | 4,553.76 mi (7,328.57 km) |
| Castellon de la Plana to Ormond Beach (Florida) | 4,510.39 mi (7,258.77 km) |
| Castellon de la Plana to Oro Valley (Arizona) | 5,768.91 mi (9,284.16 km) |
| Castellon de la Plana to Oroville (California) | 5,823.74 mi (9,372.41 km) |
| Castellon de la Plana to Oshkosh (Wisconsin) | 4,323.06 mi (6,957.29 km) |
| Castellon de la Plana to Oskaloosa (Iowa) | 4,598.64 mi (7,400.80 km) |
