| Welwyn Garden City to Senftenberg | 608.39 mi (979.10 km) |
| Welwyn Garden City to Siegburg | 326.85 mi (526.01 km) |
| Welwyn Garden City to Siegen | 359.81 mi (579.06 km) |
| Welwyn Garden City to Sigmaringen | 490.43 mi (789.27 km) |
| Welwyn Garden City to Simbach am Inn | 634.04 mi (1,020.39 km) |
| Welwyn Garden City to Simmerath | 293.06 mi (471.64 km) |
| Welwyn Garden City to Sindelfingen | 458.53 mi (737.93 km) |
| Welwyn Garden City to Sinsheim | 435.64 mi (701.10 km) |
| Welwyn Garden City to Sinzheim | 424.45 mi (683.09 km) |
| Welwyn Garden City to Sinzig | 333.89 mi (537.34 km) |
| Welwyn Garden City to Soest | 355.80 mi (572.60 km) |
| Welwyn Garden City to Solingen | 316.03 mi (508.61 km) |
| Welwyn Garden City to Soltau | 430.11 mi (692.20 km) |
| Welwyn Garden City to Sommerda | 488.17 mi (785.64 km) |
| Welwyn Garden City to Sondershausen | 475.31 mi (764.94 km) |
