| Kardzhali to Siegburg | 1,069.28 mi (1,720.84 km) |
| Kardzhali to Siegen | 1,041.46 mi (1,676.07 km) |
| Kardzhali to Sigmaringen | 904.74 mi (1,456.04 km) |
| Kardzhali to Simbach am Inn | 755.83 mi (1,216.38 km) |
| Kardzhali to Simmerath | 1,097.68 mi (1,766.54 km) |
| Kardzhali to Sindelfingen | 931.59 mi (1,499.25 km) |
| Kardzhali to Sinsheim | 952.90 mi (1,533.54 km) |
| Kardzhali to Sinzheim | 967.58 mi (1,557.18 km) |
| Kardzhali to Sinzig | 1,058.92 mi (1,704.17 km) |
| Kardzhali to Soest | 1,063.40 mi (1,711.38 km) |
| Kardzhali to Solingen | 1,086.35 mi (1,748.31 km) |
| Kardzhali to Soltau | 1,064.43 mi (1,713.03 km) |
| Kardzhali to Sommerda | 941.81 mi (1,515.69 km) |
| Kardzhali to Sondershausen | 959.11 mi (1,543.53 km) |
| Kardzhali to Sonneberg | 906.00 mi (1,458.07 km) |
