| Security-Widefield to Orangeburg (South Carolina) | 1,375.18 mi (2,213.14 km) |
| Security-Widefield to Orangevale (California) | 888.65 mi (1,430.15 km) |
| Security-Widefield to Orchards (Washington) | 1,026.88 mi (1,652.60 km) |
| Security-Widefield to Orcutt (California) | 907.99 mi (1,461.27 km) |
| Security-Widefield to Oregon (Ohio) | 1,137.85 mi (1,831.19 km) |
| Security-Widefield to Oregon (Wisconsin) | 849.98 mi (1,367.91 km) |
| Security-Widefield to Oregon City (Oregon) | 1,021.14 mi (1,643.36 km) |
| Security-Widefield to Orem (Utah) | 387.24 mi (623.21 km) |
| Security-Widefield to Orinda (California) | 947.25 mi (1,524.46 km) |
| Security-Widefield to Orland Park (Illinois) | 909.70 mi (1,464.03 km) |
| Security-Widefield to Orlando (Florida) | 1,514.59 mi (2,437.50 km) |
| Security-Widefield to Ormond Beach (Florida) | 1,495.57 mi (2,406.89 km) |
| Security-Widefield to Oro Valley (Arizona) | 560.92 mi (902.72 km) |
| Security-Widefield to Oroville (California) | 903.31 mi (1,453.73 km) |
| Security-Widefield to Oshkosh (Wisconsin) | 911.15 mi (1,466.35 km) |
