| Security-Widefield to Secaucus (New Jersey) | 1,625.49 mi (2,615.97 km) |
| Security-Widefield to Sedalia (Missouri) | 618.41 mi (995.23 km) |
| Security-Widefield to Sedro-Woolley (Washington) | 1,101.22 mi (1,772.25 km) |
| Security-Widefield to Seguin (Texas) | 740.59 mi (1,191.87 km) |
| Security-Widefield to Selden (New York) | 1,677.98 mi (2,700.44 km) |
| Security-Widefield to Selma (Alabama) | 1,083.17 mi (1,743.20 km) |
| Security-Widefield to Selma (California) | 827.79 mi (1,332.20 km) |
| Security-Widefield to Selma (Texas) | 730.71 mi (1,175.96 km) |
| Security-Widefield to Seminole (Florida) | 1,467.87 mi (2,362.31 km) |
| Security-Widefield to Seven Hills (Ohio) | 1,228.12 mi (1,976.46 km) |
| Security-Widefield to Seven Oaks (South Carolina) | 1,346.38 mi (2,166.78 km) |
| Security-Widefield to Severn (Maryland) | 1,499.93 mi (2,413.90 km) |
| Security-Widefield to Severna Park (Maryland) | 1,507.13 mi (2,425.49 km) |
| Security-Widefield to Sevierville (Tennessee) | 1,175.93 mi (1,892.48 km) |
| Security-Widefield to Seymour (Indiana) | 1,011.17 mi (1,627.32 km) |
