| Security-Widefield to Oakleaf Plantation (Florida) | 1,426.73 mi (2,296.10 km) |
| Security-Widefield to Oakley (California) | 920.02 mi (1,480.63 km) |
| Security-Widefield to Oakton (Virginia) | 1,470.13 mi (2,365.94 km) |
| Security-Widefield to Oakville (Missouri) | 776.76 mi (1,250.07 km) |
| Security-Widefield to Oatfield (Oregon) | 1,022.90 mi (1,646.21 km) |
| Security-Widefield to Ocala (Florida) | 1,446.76 mi (2,328.33 km) |
| Security-Widefield to Ocean Acres (New Jersey) | 1,622.07 mi (2,610.47 km) |
| Security-Widefield to Ocean City (New Jersey) | 1,609.60 mi (2,590.39 km) |
| Security-Widefield to Ocean Pines (Maryland) | 1,590.41 mi (2,559.51 km) |
| Security-Widefield to Ocean Pointe (Hawaii) | 3,356.60 mi (5,401.92 km) |
| Security-Widefield to Ocean Springs (Mississippi) | 1,071.41 mi (1,724.27 km) |
| Security-Widefield to Oceanside (California) | 799.85 mi (1,287.23 km) |
| Security-Widefield to Oceanside (New York) | 1,648.85 mi (2,653.56 km) |
| Security-Widefield to Ocoee (Florida) | 1,500.76 mi (2,415.25 km) |
| Security-Widefield to Oconomowoc (Wisconsin) | 896.74 mi (1,443.17 km) |
