| Castalla to Oakley (California) | 5,954.73 mi (9,583.20 km) |
| Castalla to Oakton (Virginia) | 3,996.23 mi (6,431.31 km) |
| Castalla to Oakville (Missouri) | 4,625.30 mi (7,443.69 km) |
| Castalla to Oatfield (Oregon) | 5,605.65 mi (9,021.42 km) |
| Castalla to Ocala (Florida) | 4,566.69 mi (7,349.37 km) |
| Castalla to Ocean Acres (New Jersey) | 3,824.99 mi (6,155.72 km) |
| Castalla to Ocean City (New Jersey) | 3,854.20 mi (6,202.73 km) |
| Castalla to Ocean Pines (Maryland) | 3,906.74 mi (6,287.29 km) |
| Castalla to Ocean Pointe (Hawaii) | 8,045.07 mi (12,947.30 km) |
| Castalla to Ocean Springs (Mississippi) | 4,853.76 mi (7,811.38 km) |
| Castalla to Oceanside (California) | 6,025.57 mi (9,697.22 km) |
| Castalla to Oceanside (New York) | 3,769.01 mi (6,065.63 km) |
| Castalla to Ocoee (Florida) | 4,557.19 mi (7,334.08 km) |
| Castalla to Oconomowoc (Wisconsin) | 4,379.83 mi (7,048.65 km) |
| Castalla to Odenton (Maryland) | 3,961.51 mi (6,375.43 km) |
