| Willebroek to Siegburg | 124.91 mi (201.02 km) |
| Willebroek to Siegen | 159.28 mi (256.34 km) |
| Willebroek to Sigmaringen | 299.22 mi (481.55 km) |
| Willebroek to Simbach am Inn | 432.13 mi (695.45 km) |
| Willebroek to Simmerath | 90.30 mi (145.33 km) |
| Willebroek to Sindelfingen | 262.65 mi (422.69 km) |
| Willebroek to Sinsheim | 236.00 mi (379.81 km) |
| Willebroek to Sinzheim | 232.21 mi (373.70 km) |
| Willebroek to Sinzig | 131.02 mi (210.85 km) |
| Willebroek to Soest | 165.30 mi (266.03 km) |
| Willebroek to Solingen | 118.02 mi (189.94 km) |
| Willebroek to Soltau | 267.38 mi (430.31 km) |
| Willebroek to Sommerda | 292.76 mi (471.15 km) |
| Willebroek to Sondershausen | 281.98 mi (453.80 km) |
| Willebroek to Sonneberg | 301.51 mi (485.23 km) |
