| Fallbrook to Oakley (California) | 406.04 mi (653.47 km) |
| Fallbrook to Oakton (Virginia) | 2,242.28 mi (3,608.59 km) |
| Fallbrook to Oakville (Missouri) | 1,540.13 mi (2,478.60 km) |
| Fallbrook to Oatfield (Oregon) | 879.56 mi (1,415.51 km) |
| Fallbrook to Ocala (Florida) | 2,081.61 mi (3,350.03 km) |
| Fallbrook to Ocean Acres (New Jersey) | 2,400.47 mi (3,863.18 km) |
| Fallbrook to Ocean City (New Jersey) | 2,385.35 mi (3,838.85 km) |
| Fallbrook to Ocean Pines (Maryland) | 2,360.50 mi (3,798.85 km) |
| Fallbrook to Ocean Pointe (Hawaii) | 2,620.08 mi (4,216.62 km) |
| Fallbrook to Ocean Springs (Mississippi) | 1,675.70 mi (2,696.78 km) |
| Fallbrook to Oceanside (California) | 11.07 mi (17.81 km) |
| Fallbrook to Oceanside (New York) | 2,431.44 mi (3,913.03 km) |
| Fallbrook to Ocoee (Florida) | 2,129.71 mi (3,427.44 km) |
| Fallbrook to Oconomowoc (Wisconsin) | 1,687.26 mi (2,715.38 km) |
| Fallbrook to Odenton (Maryland) | 2,274.28 mi (3,660.10 km) |
