| Astorga to Siran | 2,322.25 mi (3,737.30 km) |
| Astorga to Sirnak | 2,556.03 mi (4,113.54 km) |
| Astorga to Sirvan | 2,519.72 mi (4,055.10 km) |
| Astorga to Sivas | 2,226.54 mi (3,583.26 km) |
| Astorga to Sivasli | 1,884.71 mi (3,033.15 km) |
| Astorga to Siverek | 2,391.42 mi (3,848.61 km) |
| Astorga to Sivrice | 2,373.18 mi (3,819.26 km) |
| Astorga to Sivrihisar | 1,956.94 mi (3,149.40 km) |
| Astorga to Sogut | 1,876.32 mi (3,019.65 km) |
| Astorga to Sogutlu | 1,874.43 mi (3,016.60 km) |
| Astorga to Soke | 1,786.65 mi (2,875.33 km) |
| Astorga to Solhan | 2,447.60 mi (3,939.03 km) |
| Astorga to Soma | 1,763.28 mi (2,837.72 km) |
| Astorga to Sorgun | 2,133.31 mi (3,433.24 km) |
| Astorga to Suhut | 1,927.44 mi (3,101.91 km) |
