| Waltham Cross to Sinop | 1,770.14 mi (2,848.76 km) |
| Waltham Cross to Siran | 2,012.35 mi (3,238.56 km) |
| Waltham Cross to Sirnak | 2,267.12 mi (3,648.57 km) |
| Waltham Cross to Sirvan | 2,225.16 mi (3,581.05 km) |
| Waltham Cross to Sivas | 1,941.35 mi (3,124.30 km) |
| Waltham Cross to Sivasli | 1,694.85 mi (2,727.59 km) |
| Waltham Cross to Siverek | 2,124.43 mi (3,418.94 km) |
| Waltham Cross to Sivrice | 2,093.74 mi (3,369.54 km) |
| Waltham Cross to Sivrihisar | 1,726.21 mi (2,778.06 km) |
| Waltham Cross to Sogut | 1,645.64 mi (2,648.39 km) |
| Waltham Cross to Sogutlu | 1,620.08 mi (2,607.27 km) |
| Waltham Cross to Soke | 1,640.05 mi (2,639.40 km) |
| Waltham Cross to Solhan | 2,145.09 mi (3,452.19 km) |
| Waltham Cross to Soma | 1,579.44 mi (2,541.87 km) |
| Waltham Cross to Sorgun | 1,861.90 mi (2,996.44 km) |
