| Alton to Sinop | 1,805.88 mi (2,906.28 km) |
| Alton to Siran | 2,048.39 mi (3,296.57 km) |
| Alton to Sirnak | 2,302.39 mi (3,705.34 km) |
| Alton to Sirvan | 2,260.72 mi (3,638.28 km) |
| Alton to Sivas | 1,975.38 mi (3,179.07 km) |
| Alton to Sivasli | 1,720.65 mi (2,769.12 km) |
| Alton to Siverek | 2,157.74 mi (3,472.55 km) |
| Alton to Sivrice | 2,127.85 mi (3,424.44 km) |
| Alton to Sivrihisar | 1,755.30 mi (2,824.89 km) |
| Alton to Sogut | 1,674.32 mi (2,694.55 km) |
| Alton to Sogutlu | 1,650.44 mi (2,656.13 km) |
| Alton to Soke | 1,662.18 mi (2,675.02 km) |
| Alton to Solhan | 2,181.00 mi (3,509.98 km) |
| Alton to Soma | 1,604.11 mi (2,581.57 km) |
| Alton to Sorgun | 1,894.64 mi (3,049.12 km) |
