| San Fernando to Olympia Heights (Florida) | 4,344.02 mi (6,991.02 km) |
| San Fernando to Omaha (Nebraska) | 4,617.18 mi (7,430.63 km) |
| San Fernando to On Top of the World Designated Place (Florida) | 4,334.76 mi (6,976.12 km) |
| San Fernando to Onalaska (Wisconsin) | 4,315.07 mi (6,944.44 km) |
| San Fernando to Oneida (New York) | 3,611.14 mi (5,811.57 km) |
| San Fernando to Oneonta (New York) | 3,595.56 mi (5,786.49 km) |
| San Fernando to Ontario (California) | 5,863.72 mi (9,436.75 km) |
| San Fernando to Ontario (Oregon) | 5,389.10 mi (8,672.92 km) |
| San Fernando to Opa-locka (Florida) | 4,333.49 mi (6,974.09 km) |
| San Fernando to Opelika (Alabama) | 4,379.94 mi (7,048.84 km) |
| San Fernando to Opelousas (Louisiana) | 4,795.95 mi (7,718.34 km) |
| San Fernando to Orange (California) | 5,883.74 mi (9,468.97 km) |
| San Fernando to Orange (Texas) | 4,895.93 mi (7,879.23 km) |
| San Fernando to Orange City (Florida) | 4,287.37 mi (6,899.85 km) |
| San Fernando to Orangeburg (South Carolina) | 4,121.20 mi (6,632.43 km) |
