| Castalla to Odessa (Texas) | 5,440.71 mi (8,755.97 km) |
| Castalla to Ogden (Utah) | 5,430.78 mi (8,739.99 km) |
| Castalla to Oildale (California) | 5,984.16 mi (9,630.58 km) |
| Castalla to Ojus (Florida) | 4,584.00 mi (7,377.24 km) |
| Castalla to Okemos (Michigan) | 4,210.65 mi (6,776.38 km) |
| Castalla to Oklahoma City (Oklahoma) | 5,069.60 mi (8,158.74 km) |
| Castalla to Okmulgee (Oklahoma) | 4,994.84 mi (8,038.41 km) |
| Castalla to Olathe (Kansas) | 4,813.06 mi (7,745.88 km) |
| Castalla to Old Jamestown (Missouri) | 4,609.44 mi (7,418.17 km) |
| Castalla to Oldsmar (Florida) | 4,635.12 mi (7,459.51 km) |
| Castalla to Olean (New York) | 3,955.22 mi (6,365.31 km) |
| Castalla to Olive Branch (Mississippi) | 4,732.13 mi (7,615.63 km) |
| Castalla to Olivehurst (California) | 5,894.10 mi (9,485.64 km) |
| Castalla to Olney (Maryland) | 3,977.33 mi (6,400.89 km) |
| Castalla to Olympia (Washington) | 5,531.90 mi (8,902.74 km) |
