| San Vicente dels Horts to Olympia Heights (Florida) | 4,688.20 mi (7,544.93 km) |
| San Vicente dels Horts to Omaha (Nebraska) | 4,773.27 mi (7,681.83 km) |
| San Vicente dels Horts to On Top of the World Designated Place (Florida) | 4,646.24 mi (7,477.41 km) |
| San Vicente dels Horts to Onalaska (Wisconsin) | 4,467.29 mi (7,189.41 km) |
| San Vicente dels Horts to Oneida (New York) | 3,824.14 mi (6,154.36 km) |
| San Vicente dels Horts to Oneonta (New York) | 3,816.79 mi (6,142.53 km) |
| San Vicente dels Horts to Ontario (California) | 5,969.16 mi (9,606.43 km) |
| San Vicente dels Horts to Ontario (Oregon) | 5,428.75 mi (8,736.73 km) |
| San Vicente dels Horts to Opa-locka (Florida) | 4,676.79 mi (7,526.56 km) |
| San Vicente dels Horts to Opelika (Alabama) | 4,651.12 mi (7,485.26 km) |
| San Vicente dels Horts to Opelousas (Louisiana) | 5,054.69 mi (8,134.75 km) |
| San Vicente dels Horts to Orange (California) | 5,989.55 mi (9,639.24 km) |
| San Vicente dels Horts to Orange (Texas) | 5,150.09 mi (8,288.27 km) |
| San Vicente dels Horts to Orange City (Florida) | 4,604.26 mi (7,409.85 km) |
| San Vicente dels Horts to Orangeburg (South Carolina) | 4,403.93 mi (7,087.43 km) |
