| Opfikon to Security-Widefield (Colorado) | 5,208.02 mi (8,381.50 km) |
| Opfikon to Sedalia (Missouri) | 4,791.91 mi (7,711.84 km) |
| Opfikon to Sedro-Woolley (Washington) | 5,181.73 mi (8,339.19 km) |
| Opfikon to Seguin (Texas) | 5,436.39 mi (8,749.02 km) |
| Opfikon to Selden (New York) | 3,881.89 mi (6,247.29 km) |
| Opfikon to Selma (Alabama) | 4,848.89 mi (7,803.53 km) |
| Opfikon to Selma (California) | 5,809.91 mi (9,350.15 km) |
| Opfikon to Selma (Texas) | 5,450.23 mi (8,771.30 km) |
| Opfikon to Seminole (Florida) | 4,887.54 mi (7,865.73 km) |
| Opfikon to Seven Hills (Ohio) | 4,215.05 mi (6,783.46 km) |
| Opfikon to Seven Oaks (South Carolina) | 4,523.49 mi (7,279.85 km) |
| Opfikon to Severn (Maryland) | 4,108.12 mi (6,611.37 km) |
| Opfikon to Severna Park (Maryland) | 4,104.88 mi (6,606.16 km) |
| Opfikon to Sevierville (Tennessee) | 4,540.31 mi (7,306.92 km) |
| Opfikon to Seymour (Indiana) | 4,493.44 mi (7,231.49 km) |
