| Cuellar to Siran | 2,249.72 mi (3,620.57 km) |
| Cuellar to Sirnak | 2,479.11 mi (3,989.74 km) |
| Cuellar to Sirvan | 2,443.77 mi (3,932.87 km) |
| Cuellar to Sivas | 2,151.34 mi (3,462.25 km) |
| Cuellar to Sivasli | 1,800.55 mi (2,897.70 km) |
| Cuellar to Siverek | 2,312.65 mi (3,721.85 km) |
| Cuellar to Sivrice | 2,296.16 mi (3,695.31 km) |
| Cuellar to Sivrihisar | 1,877.04 mi (3,020.80 km) |
| Cuellar to Sogut | 1,797.22 mi (2,892.35 km) |
| Cuellar to Sogutlu | 1,798.39 mi (2,894.22 km) |
| Cuellar to Soke | 1,698.53 mi (2,733.52 km) |
| Cuellar to Solhan | 2,373.17 mi (3,819.26 km) |
| Cuellar to Soma | 1,679.69 mi (2,703.20 km) |
| Cuellar to Sorgun | 2,057.04 mi (3,310.49 km) |
| Cuellar to Suhut | 1,844.08 mi (2,967.76 km) |
