| San Diego Country Estates to Olympia (Washington) | 1,021.17 mi (1,643.41 km) |
| San Diego Country Estates to Olympia Heights (Florida) | 2,239.95 mi (3,604.85 km) |
| San Diego Country Estates to Omaha (Nebraska) | 1,272.07 mi (2,047.21 km) |
| San Diego Country Estates to On Top of the World Designated Place (Florida) | 2,050.62 mi (3,300.15 km) |
| San Diego Country Estates to Onalaska (Wisconsin) | 1,565.82 mi (2,519.94 km) |
| San Diego Country Estates to Oneida (New York) | 2,317.57 mi (3,729.77 km) |
| San Diego Country Estates to Oneonta (New York) | 2,345.65 mi (3,774.96 km) |
| San Diego Country Estates to Ontario (California) | 85.37 mi (137.40 km) |
| San Diego Country Estates to Ontario (Oregon) | 761.23 mi (1,225.09 km) |
| San Diego Country Estates to Opa-locka (Florida) | 2,240.33 mi (3,605.47 km) |
| San Diego Country Estates to Opelika (Alabama) | 1,816.82 mi (2,923.89 km) |
| San Diego Country Estates to Opelousas (Louisiana) | 1,458.02 mi (2,346.46 km) |
| San Diego Country Estates to Orange (California) | 81.07 mi (130.47 km) |
| San Diego Country Estates to Orange (Texas) | 1,367.37 mi (2,200.58 km) |
| San Diego Country Estates to Orange City (Florida) | 2,111.81 mi (3,398.63 km) |
