| Castalla to Orangevale (California) | 5,901.90 mi (9,498.20 km) |
| Castalla to Orchards (Washington) | 5,589.44 mi (8,995.33 km) |
| Castalla to Orcutt (California) | 6,066.17 mi (9,762.56 km) |
| Castalla to Oregon (Ohio) | 4,199.38 mi (6,758.25 km) |
| Castalla to Oregon (Wisconsin) | 4,425.11 mi (7,121.52 km) |
| Castalla to Oregon City (Oregon) | 5,609.22 mi (9,027.17 km) |
| Castalla to Orem (Utah) | 5,463.33 mi (8,792.38 km) |
| Castalla to Orinda (California) | 5,978.13 mi (9,620.87 km) |
| Castalla to Orland Park (Illinois) | 4,402.09 mi (7,084.49 km) |
| Castalla to Orlando (Florida) | 4,550.90 mi (7,323.97 km) |
| Castalla to Ormond Beach (Florida) | 4,508.66 mi (7,255.98 km) |
| Castalla to Oro Valley (Arizona) | 5,799.94 mi (9,334.10 km) |
| Castalla to Oroville (California) | 5,872.86 mi (9,451.46 km) |
| Castalla to Oshkosh (Wisconsin) | 4,351.90 mi (7,003.71 km) |
| Castalla to Oskaloosa (Iowa) | 4,626.01 mi (7,444.84 km) |
