| Opfikon to Siran | 1,591.82 mi (2,561.79 km) |
| Opfikon to Sirnak | 1,840.06 mi (2,961.29 km) |
| Opfikon to Sirvan | 1,800.09 mi (2,896.96 km) |
| Opfikon to Sivas | 1,509.13 mi (2,428.72 km) |
| Opfikon to Sivasli | 1,228.08 mi (1,976.40 km) |
| Opfikon to Siverek | 1,687.11 mi (2,715.15 km) |
| Opfikon to Sivrice | 1,660.98 mi (2,673.08 km) |
| Opfikon to Sivrihisar | 1,271.17 mi (2,045.74 km) |
| Opfikon to Sogut | 1,189.32 mi (1,914.03 km) |
| Opfikon to Sogutlu | 1,171.21 mi (1,884.88 km) |
| Opfikon to Soke | 1,163.92 mi (1,873.16 km) |
| Opfikon to Solhan | 1,722.68 mi (2,772.38 km) |
| Opfikon to Soma | 1,109.62 mi (1,785.77 km) |
| Opfikon to Sorgun | 1,423.10 mi (2,290.26 km) |
| Opfikon to Suhut | 1,263.54 mi (2,033.47 km) |
