| Kilkis to Senftenberg | 840.31 mi (1,352.36 km) |
| Kilkis to Siegburg | 1,009.86 mi (1,625.22 km) |
| Kilkis to Siegen | 985.04 mi (1,585.28 km) |
| Kilkis to Sigmaringen | 830.39 mi (1,336.38 km) |
| Kilkis to Simbach am Inn | 697.38 mi (1,122.32 km) |
| Kilkis to Simmerath | 1,034.41 mi (1,664.72 km) |
| Kilkis to Sindelfingen | 861.73 mi (1,386.81 km) |
| Kilkis to Sinsheim | 886.94 mi (1,427.39 km) |
| Kilkis to Sinzheim | 895.74 mi (1,441.55 km) |
| Kilkis to Sinzig | 997.83 mi (1,605.85 km) |
| Kilkis to Soest | 1,012.09 mi (1,628.81 km) |
| Kilkis to Solingen | 1,029.13 mi (1,656.22 km) |
| Kilkis to Soltau | 1,028.51 mi (1,655.23 km) |
| Kilkis to Sommerda | 898.70 mi (1,446.32 km) |
| Kilkis to Sondershausen | 916.43 mi (1,474.85 km) |
